Apparently Shel didn't negotiate "founder's stock." This excerpt is from [1]: So, you are kind of the forgotten founder? Most people think of Jeff Bezos as the creator of the company. “In fact, to be completely technically true about it, he is the founder. But I was talking to him about joining him on the venture before the company was incorporated. He basically was just arriving from the East Coast and setting up hi…
It seems that being employee #1 is a sucker of a deal with a lot of the same downsides as being a founder without the huge upside of being a founder.
Calling BS on this has not yielded any great results. If not anything, there should be some clause that benefits the first 2 or 3 employees with an outsized monetary outcome, if the company becomes immensely successful.
The above equity numbers probably make sense if founders have worked on the idea for a while, built some reasonable MVPs, done market validation, have found reasonable PMF and all that.
Bottom line, it's not worth being the first engineer purely from a monetary standpoint.