Some companies create new stablecoins, why do we need them? if key is already there. I hope they will not be as much as conventional cryptocurrencies (more than 1500) of which most scams.
So they can compete among themselves and get better. Competition is only good for the end user. In 10 years time you will not even have any ideas what crypto or what stable coin you use. Wallet that you will use will just pick the one that is best for your service.