Steak knives need to be thin and sharp.
While they don't NEED to be saturated, any that will be used in a industrial setting probably do.
They also need to be stainless, with synthetic handles, and some sort of mechanical fastener.
They WILL be going in a dishwasher, and being used by the public on hard plates, not on nice wooden plates that don't damage your nicely honed edges.
I think it would be really quite challenging to make enough steak knives, at a low enough price point for a restaurant.
Say you have a small restaurant with 12 tables, you need to have at least 2 sets of cutlery for each, because you need to be able to seat another group of customers within a minute or two do the last customer leaving. You also need a couple more sets, just in case. So you need at least... Say 28 knives, forks and spoons. And that's a small restaurant.
Unless they have a LOT of capital, they're not going to want to spend time of money on knives, maybe 15-20$ each?
If you're making these by hand, you're gonna be really hard pressed to make any knife of profit with that low of a price point...