Increasing price would just move up the demand curve (less people willing to spend the increased amount on fixing their broken car) and the mechanic would earn

Increasing price would just move up the demand curve (less people willing to spend the increased amount on fixing their broken car) and the mechanic would earn more. ofc overtime it's likely more mechanics enter the market to compete, but that wouldn't be instant. and when it does happen the table stakes would be that everyone's phone call get's answered idk I feel like i'm missing something basic here