I didn't say no-one else does.

Basically who-ever it is that you are not / do not have needs salary. Whatever you yourself are - the founder - doesn't need a salary because they are the idea person whose idea is so great in their own eyes that they are willing to take a year or few living on Ramen sleeping under bridges to spare every penny they have to hire who-ever they need to do the parts they cannot do themselves...

Or if they do need a salary, they get a job, and work on their idea the other 16 hours of each day except the days they collapse a few hours into sleep.

-MarkM-