No, the reason nobody (in and only in the US) uses 2FA (because nearly every other country in the world uses it widely) is because it's a pain to use for the end user. No enterprise is going to invest their time and energy into a solution unless they're either required to by regulations or is truly better, easier, more secure, or whatever than competing solutions to make it a compelling sale.
If this were a hobby project then I'd be cheering you on -- why not make a token 2FA with a slightly better API? But as a YC-funded company whose likely avenue of success will be through the enterprise market, you NEED to develop a product that is better, faster, easier, more secure, etc than your (rather formidable) competition.
Trust me, I'm familiar with this market ;).