Yes, and no. Part of what allows people to have things is the cost. Business relies on lowering the cost of everything to its very minimum, with very few exceptions. In order to have things cheap, someone has to earning very little.
This always makes me curious when people talk about moving manufacturing back to the US (or the UK). Fine, that can happen, no problem. But who is going to be able to afford the goods they make? Let's not forget the reason manufacturing went abroad in the first place. The wages paid to labor in China, Vietnam, Taiwan, are not feasible in the US. No-one could compete. So, are these people really saying they are willing to pay 10X or 20X (or more) the cost of their products to support US manufactured items?
People who put iPhones together in China earn less than $3 an hour. In India they get less than $200 a month, and in Vietnam it's $1.28 an hour. Apple are slowly moving manufacturing out of China to these other countries because they can save money! Yet do people avoid Apple products? Of course not. In fact, they're popular. Doesn't this suggest we really don't care?
As such, the middle class very much relies on the have-nots.