I get sick of seeing people say this.
Most adults don't shop themselves to the highest bidder EVERY chance they get. They don't. I get to see a lot of different workers in my line of work, interact with them, look at employer turnover, and that isn't how it works in the real world. And folks definitely aren't shopping around and leaving for small bumps.
Some fields are different. The IT field may be different. That's an exception to that rule. Otherwise people would just constantly be jumping jobs and turnover would be thru the roof. Not talking about low income jobs either, like the food industry.