What do you think 'market rate' means? If you aren't able to hire for $14 but someone else is for $18... then $14 is clearly not the market rate and $18 is. That's what a market rate is - the rate things are selling for in the market.
Doesn't that maybe suggest that $18/hr is probably the current market rate then? My understanding of market rate is "amount at which the two parties are willing to negotiate", not "amount that the employer wants to lock in at, all other factors be damned"
If one can't afford to pay competitive wages, that may suggests they're not actually financially healthy enough to stay in business.
I live in a 50k poulation town, and $14 is not a living wage.
If someone can Doordash, etc, and make more( while arguably dealing with less stress) they'll rationally do that.
Or since this is HN, can you automate some of these tasks ?
Imagine if instead everyone wanted to work at your restaurant, EVERYONE, you'd fire your 6 guys and pay $2 their replacement, no ?