No, every coin has different owner or companies which working to make a coin be progressive in its price and volume, dont wish for a stable coin, wish for a coins thats has a good development time per time. That was needed by a trader, you cant gain profit from a stable currency, its required to have changing price to be a good trading coin. Stable is not kind of good but its not worst, its be better than dead coin
Stablecoins are cheaper to send and receive to any part of the world. For instance with EURS you can send any sum to any part of the world paying just 0,5 EURS. For other like TUSD, USDC etc. you just pay gas.
Stablecoins are designed to help investors to jump in and out of the crypto market cheaper and faster. It only takes you seconds to exchange BTC, ETH or whatever to a stable unit of account instead of days for jumping to fiat.
Hope that helps to understand the role of the stablecoins in the financial ecosystem