How much is $75 million is relation to an oil spill? Let's look at the history of the 1989 Exxon Valdez spill in Alaska. According to Nina Totenberg at NPR, "At Exxon's request, the federal court in Alaska certified about 32,000 individuals with potentially valid claims to sue as a single group. In closing arguments, their lawyer asked for between $5 billion and $20 billion in punitive damages meant to deter such conduct in the future. Exxon, in closing arguments, said there should be no punitive damages. The jury awarded $5 billion, which, after two appeals, was reduced to $2.5 billion, or roughly $75,000 per person." 
Thus, even if the current Gulf Spew were comparable to the Exxon Valdez disaster, $75 million would only cover about 1.5% to 3% of the liability. But the Gulf Spew has already been and will be even more damaging that the Exxon Valdez spill for at least three reasons:
1. You have to adjust for inflation. Add about 70% for inflation between 1989 and 2009.
2. The Gulf Coast is considerably more populous than Prince William Sound was in 1989 so many more properties and lives will be impacted.
3. As of May 20, the Gulf Spew has discharged the equivalent of 11 Exxon Valdez spills, taking the most recent estimate of 95,000 barrels per day. . It is likely that the gusher will continue for several more weeks.
What are BP's intentions? It doesn't take a course in motivational acting to figure out that BP will do everything it can to improve its bottom line. After the full extent of the gusher's damage and the inadequacy of BP's compensation to victims becomes apparent, there will doubtless be many pundits who'll feign surprise like some twisted version of Captain Renault in "Casablanca" who was "shocked, shocked to find that gambling is going on in here!"  The whole raison d'etre of corporations is to internalize profits and externalize costs. So, to these pundits I would say, "Puh-leeze! Spare us the histrionics and tell us something we don't already know."
Will BP do everything it can to conceal the extent of the spill? That would seem to be a strategy that would reduce their ultimate liability and benefit their bottom line.
Will BP clean up the Gulf? Presumably, only to the extent that cleaning up will cost them less than not cleaning up.
Will BP pay the costs of clean up? Again, presumably, as little as they can get away with.
Does BP have any motivation to stop the gusher? Well, yes, it's spewing 95,000 barrels of oil a day, which at $75 per barrel is about $7 million a day, $50 million a week, $2.5 billion a year. They want that oil going into their bank accounts, not into the ocean, especially if they're going to have to face huge costs for the catastrophe.
Will BP stop the gusher even if it means they'd have to destroy the well, say, with an underwater explosion? Hmmm". tough call. Drilling another well would cost tens of millions of dollars in addition hundreds of millions of dollars in delayed oil production. So" maybe not?
Will BP ever rescind their early estimate of 5,000 barrels per day leaking and admit that scientists' estimates of 70,000 to 95,000 barrels per day are closer to the truth? Not if they don't have to.
With the recent success of BP's pipe that is recovering 3,000 to 5,000 barrels a day, will BP hope that most people still keep the bogus 5,000 barrels per day leak rate in mind so they'll mistakenly assume that the problem is 100% under control even though the tiny recovery tube is more like a soda straw sucking water from the end of a fire hose? Well, so far, they've said nothing to disabuse anyone of that fallacy.
During the cold war there used to be a saying that "you can trust the Russians to be Russians". Now that some of America's major adversaries are international corporations, I'd say we should follow a new maxim; namely "you can trust corporations to be corporations".
That's the status quo. That's the default. If we don't like it, then someone will have to do something different.
The most obvious alternative would be for the government to take charge. But, unfortunately, there's no political upside for anyone in government to take charge of the spill. No matter what happens, the Gulf Spew is likely to be the largest environmental disaster in history, at least so far, and maybe for all time. If you look at a map of the Gulf's "loop current"  and you consider that at least some of the oil is drifting to the southeast , it isn't hard to imagine a major flow of oil drifting into the loop current and following the gulf stream up the Eastern seaboard and east across the Atlantic. No one wants to risk having their name associated with a catastrophe of that scale. As things stand, whatever happens can be blamed on BP and its subcontractors. If the government takes charge, the blame will get shifted to whoever takes charge. Even if the government succeeds in stopping the flow immediately, the perception of the catastrophe is going to inevitably increase with time as more drifting oil washes ashore and the media isn't even remotely savvy enough to report that, "yes, things have gotten worse since the government took charge, but not nearly as bad as they would have been had they not taken charge." So, taking charge and solving the crisis is inherently a thankless job that would cost anyone who undertook it a lot of political capital, perhaps even their career, even if they did an excellent job. For these reasons, it's unlikely anyone will truly step forward and own the situation.