Seeing so much of the talented currently laid off, why aren't we seeing new bootstrapped businesses?

The general advice that I have heard is to just keep learning and enter the workforce when it is normal again.

But I thought for some people, this is the push that they needed to build their own startup or business. Sitting without any job that screw anybody's mind so this seems to be an option too. Funding is dried up but people with a good enough runaway can start a business together in a bootstrapped manner.

Even if you return to the workforce right now, there isn't a guarantee you'll be getting your previous CTC, the previous WLB. Companies are trying to cost cut by overloading on a per employee basis and raising competitive nature between teammates themselves. If you getting this much toll, 70 hours per week in worst cases, might as well put that effort on your own venture.

Building a startup is risky. But when your current job is itself risky, doesn't seem wrong to build one.

But popping up of such small scale business doesn't happen much. Why?