This argument always struck as similar to telling someone that because they wear ugly clothes, we're going to run them out of public spaces. Except worse because it's their own house.
Residential zoning restrictions are old and are made that way for a reason - so that people can live and relax in peace.
Zoning in the US does not have such an innocuous history: https://en.wikipedia.org/wiki/Zoning_in_the_United_States#Or...
Besides:
> Well, if you want to work on a car project, you can always go and buy/rent a property in a mixed zone area.
These are few and far between these days, and consequently a lot more expensive. So depending on how much money you have, no, that's not always an option.
So, just because you don't have the money to start your company complying with the laws and regulations, you should be free to simply ignore these rules and make a profit by offering cheaper services than those companies complying with the rules?! Or even for your private car that needs a fix - no, the laws and regulations apply for everyone just the same, and just because you don't have the money to rent out a garage I don't see any reason why you should infringe on everyone else's rights.
The law, in its majestic equality, forbids rich and poor alike to sleep under bridges, to beg in the streets, and to steal their bread.
―Anatole France