I've begun to think some bubbles are good for the economy overall. In the dotcom days anyone with an idea and a domain name could get funding. I myself worked for a company that nabbed 7x more funding than needed but still failed due to poor leadership. I had reservations about the founder but thought I could help drive things, but he was even more absent than I ever anticipated.

A lot of VCs and PEs lost a lot of money during the crash. This means a lot of capital was spent in the economy, generating a lot of good activity, and the companies that failed then also put a lot more capital back into the economy through bankruptcies. Other businesses can pick up talent, IP, and assets for cheap, and everyone can learn from the failures. While losing that money isn't great for VCs, what they got was a very valuable education to be better stewards of their investments, and pick better companies. The next rounds of companies have to hit metrics, milestones, have to prove their value, etc.

Never waste a perfectly good crisis: learn if nothing else.