It isn't a market control strategy, it's a strategy to have a successful business by meeting the market demand for seeds that don't produce males. It's not something forced on growers from "corporate," quite the opposite really. In any event, it is a poor control strategy. Nothing is stopping people from cloning those seeds. Nothing is stopping people who have the desire from making their own feminized seeds from females that come from either regular or feminized seeds. Nothing stops people from making regular seeds from males that come from regular seeds either but most people don't, they trash the males as soon as they show.
Most growers don't want to fuck around with males that take up precious space, time, and plant counts. Not when you can buy seeds that reliably produce females.
Seed banks do lots of business because most growers don't want hundreds of seeds that all produce basically the same shit. Not when you can spend $10 and get something totally new to you that you can keep around for as long as you want.
Most growers don't want seeds in any of their buds, not when seeds with the aforementioned qualities are readily available from stores, dispensaries, and through the mail.
With respect to breeding, if you're breeding with females you can directly observe the desired traits of both parents. That greatly increases the power of your selection, not to mention the speed, compared to painstakingly crossing males to the target female then growing out and carefully evaluating the female progeny, which hardly ever happens.
AFAIK, all opposition to feminized seads boils down to "i have a bad feeling about it," including "they use teh chems" and totally unsubstantiated claims of "hermies." Maybe there are negatives, but nobody has proposed a plausible explanation for why or evidence that they exist at all. Meanwhile, the market for feminized seeds is flourishing with little complaint.