Perhaps you could turn into a subsistence farmer making every home product you own on your own or in a small commune, or perhaps you and a group of employees could buy your existing employer.
But the other more realistic method is that you would start your own business so you no longer have to work for someone else.
19% of all American adults are starting or run a business. It's a very common way to make a living.
IMO the idea of removing advertising entirely would essentially entrench the status quo even further. People would only know brands like Coca-Cola, Tide, and Apple, the brands they knew about the day the ads shut off. There would be no chance for other companies to enter markets because they would have no realistic way of spreading the word about their alternatives, not even for small local businesses.
The proposal is not just radical, it's downright moronic if you've ever been in the shoes of owning your own company.