It's hard to see the scale of what he's doing. Could be:

- I'm building a server farm in my homelab.

- I'm doing a small startup to see if this idea works.

- We're taking on AWS by being more cost effective. Funding secured.

Not an answer, but it this provides some illumination on the question: https://github.com/tailscale/tailscale/commit/d539a950ca4a66...

If you click the first link in the post, about funding, you’ll see they just raised $35mil.