> How is the risk the founder takes that different to Employee #1's?
Employee #1 will probably be getting a salary, if the company fails he can get a job somewhere else. Meanwhile the founders who worked on the idea probably used their savings initially not to mention quitting their jobs and working on the idea and facing humiliation if the company fails.
That takes courage which everyone cannot do which is why founders deserve to get rich if they build something valuable, employees not so much unless they are willing to stick it out till the end.