Sure, but then you've lost out on other offers that you may have declined, and you're back to unemployed.

Indeed. The labor market is quite illiquid from the point of the laborer, with a lot of ugly sunk costs and worse opportunity costs. There's not enough safety nets if you buy the wine-and-dine sales pitch but find the reality is a lot more of a lemon than you were sold. (There are no lemon laws for the labor market, sigh.)