Wendell Berry wrote: there are two muses — the Muse of Inspiration, who gives us inarticulate visions and desires, and the Muse of Realization, who returns again and again to say "It is yet more difficult than you thought."
Founder mentality - I'm too busy to hire. I can figure this out.
CEO mentality - I need to find the right person to figure this out.
Transition is always hard.
The good stuff is always lonely in the beginning. Nothing meaningful will get made if its potential makers all wimp out too soon, because they get scared by the sparse crowd, the empty room.
You can be the best product for small market, build a real company, and then from a position of strength, either stay there or attempt to expand to adjacent markets.
Or be undistictive in a huge market, out-advertised and invisible, never getting off the ground.