I cant imagine bitcoin to become stable, maybe investors will not buy and holds bitcoin as an investment if this would become stable, for me there is no way for btc to become stable because it is decentralized and i never seen btc become stable from the past so it will never ever become stable.
You are right, it makes no sense then it will not be attractive to traders and investors. I personally would not want it to be stable so it will not be interesting, but at least there is an interest to check the exchange rate every morning and calculate whether there is a profit or not) For stability, they have already come up with other coins and tokens, which would be very difficult to use today.