Bankruptcy is not a mild consequence. People can and often are ruined by a bankruptcy, not to mention the harsh impact that it has on employees who are suddenly forced out of a job. Declaring bankruptcy should not be considered as something mundane or yet another run-of-the-mill managerial decision.
Also, not being able to found a company is not what I would call "harsh". Even in a purely capitalist view of society, a entrepreneur needs to focus on ventures to ensure they are successful, and "failing fast" does not mean it's ok to file for bankruptcies.