I would rather say, it should be a personal choice. I'm going by my situation as is. I'm retired and out of business. But, if I were to do some business I have to take into account whether I'm being predatory or not, or to what degree. The everyday individual that has to make a living may not have much of a choice. We are stuck with an inherited system of economy. I would rather be in a closed social system economy, but even at that it would still require at times a bit of capitalism. Capitalism isn't necessarily predatory but is an open door to predatory practices.
It seems to me you're arguing that "personal choice" is somehow defining of or integral to capitalism. If so, you've failed so far. You haven't shown that capitalism is or "should be" a personal choice. In fact, though personal choice is hopefully an element in a capitalist system, it is largely irrelevant.
Often the "personal choice" presented by capitalism is "our way or nothing" or "this product or forget it." If you want to watch certain television shows when they're presented to the public, you must subscribe to a particular provider. In many cases there is only one provider in your area that gives access to those shows. In a capitalist system, "personal choice" is an incidental benefit that may arise, but it's certainly not necessary. When capitalists have free rein, they tend to accumulate power and try to eliminate the competition. This results in diminishing personal choice rather than enhancing it, and there's nothing in capitalism in and of itself that prevents this result. There isn't a genuinely capitalist mechanism that even mitigates against such an outcome. Sure, competition is part of capitalism, and that will provide some choices, but once a particular entity has out-competed all its rivals, choice becomes superfluous.