By the time you do all that, effectively moved in to the Design By Committee Industry, what distinguishes your widget from ACME Big Widget Co & Sons. And emplo

By the time you do all that, effectively moved in to the Design By Committee Industry, what distinguishes your widget from ACME Big Widget Co & Sons. And employing all those people doesn't guarantee success, but it does guarantee your failures will cost a lot. You'd probably want to only attempt making something like this as a vanity project, where it matters less if you fail, and thereby half the fun is navigating the path to success by yoursel[f/ves].