Is it feasible to cook a gourmet tasting menu in a home kitchen? This is not a question about cooking per se, but about professional cooks outside their day jobs. I have seen a few movies where chefs have a restaurant-grade kitchen and kitchenware at home, all ready to use on a regular basis. For example, in Chef, the titular character quits his job at a fancy LA restaurant after an argument with the owner, then goes home and proceeds to cook the same gourmet tasting menu he was planning to cook at the restaurant. 

Is this a realistic depiction? Could he likely cook that menu at home, or would he likely need things present only in a professional kitchen? I understand that chefs might want to invest on high-grade hardware for their own homes, but I wonder to what extent they actually need to have everything they would need in their work kitchen.
I agree it's quite believable. Most restaurant equipment is more about cooking in bulk than being particularly specialized things you can't get at home. So it's extra durable/stays sharp longer or is just big (like a fridge). 

It really doesn't take much money to make good food though. A lot of the gadgets and gizmos that you see on TV can be replaced with 1 good knife kept sharp...and a lot of chefs prefer a knife for the control. For example I have a mandolin. It cuts my vegetables very rapidly and saves me a bunch of time when I make vegetable stew, which I make a lot-- but it doesn't cut my vegetables evenly, which in a gourmet restaurant could be a problem for presentation. (Actually I'm going to get rid of my mandolin soon, too. I've gotten faster with a knife by now from practice.) 

Another thing to think about-- being a chef is a hard job. If you're a gourmet chef you're probably passionate about cooking, so it makes sense to spend money on that hobby for at home as well.