I'd suggest you consider product management. At the right company, product management is a good overlap in the venn diagram of "thinking up cool stuff", "tradeoffs & problem solving" -- ideally with exactly the kind of technical insight it sounds like you have -- and "making shit happen".

Given your lack of inspiration, I'd strongly suggest not starting a company just yet. Wait until it's a calling.

If you pick a company who makes products that interest you, that seems like a win. Ideally one where you can get some mentorship in product management as well.