You need billions of dollars of funds to have a real stable coin. You need a huge budget for the asset that backed it and also for the developers of your smart contract and security plus blockchain if you want your stable coin to become unique since most of the blockchain has their own native stable coin so you can't barge in on random blockchain and build you stable coin there.

Most of the mediocre stable coins didn't have any trading volume since no one will trust to use your coin if you have no proof of funds to back the supply of your token for their face value.