Coming to the specific problem OP has. The wanted to work on fine wines, not WalMart wines. If the best wine in the world, would be sold at WalMart(or any other super market) even at the same price and in the same conditions it would lose immediately value because all the research, experimentation, and everything is lost, and that is a huge part of the experience that you taste with the wine.
A practical example: you know how to make the best cake in the world, but it takes a lot of time and it's hard so you can do it only once a year, but you love it, it's your favourite cake so when you make and eat it you love it and you wish you could do more. If WalMart started to sell the same cake you would buy it once or twice but it would not be the same and you probably would end doing once a year as you always did. This is the same problem of OP, people wanted the service, used once or twice and then went back to the old habits.