Depends on the bankruptcy. Nobody is going to shed tears over investors losing out. Speculate to accumulate, risk and reward.
But IDK how it works in other countries, UK bankruptcies also means customers, unsecured creditors (often other small businesses), and the State (payroll taxes) also lose out.
And it leaves a bad taste when a company run at high risk of bankruptcy ("oh but we're a Start Up") screws over their suppliers which are often more traditional businesses (whether that's print designers, lawyers or tradespeople) by carrying on trading far into insolvency.
That implies a kind of arrogance ("You just have a business which pays it's bills, I have a vision) which UK culture is allergic to.