Bitcoin can be broken into smaller pieces of coinage by 2nd layer multisignature contacts where settlement occurs. Like lightning offers 2.1 quintillion verses on chain 2.1 quadrillion. 

There is no reason to increase the supply cap unless you are innumerate. 

This is kind of why $fiat is so stupid because the coinage itself is always increasing supply when it could actually break into smaller denominations that increase buying power....

But that's not the point of Fiat currency. The point is mind control.