What will adoption look like?

We can't have price tags with one fiat and a hundred cryptos. The only practical expectation is for price tags to have one fiat and one crypto. What crypto would that be, Bitcoin? Whatever it is, it will become bound (not pegged) to fiat, which means it will become extremely stable relative to fiat, behaving almost like a stablecoin.

The prices of all other digital assets will still be free to change relative to the adopted asset. Honestly, I'd rather the adopted asset be Litecoin, with its shorter confirmation time, and energy-efficient script. Then we can use whatever other assets we want as banks, and convert them to Litecoin for shopping.