A stablecoin is a cryptocurrency that is backed, added, or backed by an underlying asset. low volatility with stablecoins being the main benefit to continue to attract both individual and institutional interest. Exchange rate stability is useful for both holders and those trying to integrate Bitcoin and other cryptocurrencies into the wider financial system.
I can give you mixed opinions on this matter OP.
There are equal possibilities that stablecoin can overcome BTC and tbh, the potential can be seen in ETH and LTC.
But still BTC is father of all coins.
To come to the level of Bitcoin, the stable coin need to be stand out from the crowd.
If the coin’s marketcap increases gradually and overcome BTC’s rule, then no doubt it will take control of Bitcoin.