It is one of the basic pillars of bitcoin that the supply is limited, it is unlikely that a fork which minted new coins would be accepted, you can create a fork but that fork is not bitcoin. 1 Bitcoin is divisible by 100,000,000.
I agree. The bitcoin number limit is fundamental. It's what shows up fiat for what that is. It's also what makes it threatened. I believe the growth of altcoins was in part to placate the financial system. Maybe not increase the total number of bitcoin that will ever exist but the creation of altcoins gives the idea that the alternative to fiat is expanding as fiat multiplies.