See "price stickiness" and what is simplified as "menu reprinting costs"; there's usually a cost associated with changing prices, and a cost associated with renegotiating prices for everything that's not being sold on a spot market. People cannot buy housing at spot, and while spot-labour pricing is definitely a thing for some services it's so socially destabilizing for anything skilled that most workforces operate on salary.

The reverse of this is that high inflation tends to cause a lot of strikes, because salaries refuse to go up and very high levels of inflation need salary repricing every month or even week.