You wouldn’t want to be an investor in one that did or looked like it was doing that
But yes there are other deterrents like not optimizing share price or returns for the other shareholders, by laws, state laws, rules from the exchange you trade on and mayyybe a regulator
When i heard beanstalk was exploited, i was thinking this was some like some instant leveraged buy out, like in tradi where a investment fund borrows a bunch of money (with the other companies assets as collateral), buys a company and sells there most profitable assets while the company lingers own death door for years (with some kind inflated asset valuation with the rest of their collateral leftover) before bankruptcy.
Just much faster in crypto because they allowed for their governance to be vulnerable to flashloans.
But yes there are other deterrents like not optimizing share price or returns for the other shareholders, by laws, state laws, rules from the exchange you trade on and mayyybe a regulator