We've had 20-30 years of ever escalating bailouts. Heads: you win. Tails: the public looses.
"Capitalism", or rather the free market, works by moving from failure to failure. Without "Tails: you get taken to the woodshed", failure doesn't lead to learning and improvement. No amount of regulation will change that.
Quite the opposite: most modern regulation is so complex that lawyers can't get enough of it. Not to mention the revolving doors between regulators and their targets.
Same thing put differently: we already have socialism. It's just socialism for the rich.
I don't believe we'll see this in my lifetime or even 200 or 300 hundred years, but I believe it could happen one day. And when that happens, capitalism will be rendered useless, and we'll go towards something more like communism or socialism.
As for today, show me something else that works better at managing resources than capitalism. It's shitty, I'll entertain hypotheticals and theories, but capitalism is the only thing thats worked so far. In the distant future I root for its demise.