That's not the same as microstock. We produce anything we want and submit it to be sold. The only catch is editors judge whether it is of sufficient quality to be marketed by them. They don't change anything of the work. If you produce quality work then 9 times out of 10 you will get accepted and then it's up to the buyer to decide if he/she wants to pay money for it. Welcome to the world of art.
For the rest of us we shoot on spec, put it out there and hope for the best. There is freedom in that, we're not told what to photograph and our work is not edited, only judged. Completely different.
If the judging is setting the standard at Photo Factory Microstock images, and much of the heart and soul and creativity is removed, because it won't get accepted or sold, you claim that's not going to change what we shoot? Buyers may choose what people shoot but at least that's optional and based on needs, not some "stock - stock", closed and limited mindset.
OK I'm free to shoot all the shots of things I like and enjoy that I like, Free to submit them and they will refuse every one. Somehow I don't see that as freedom of expression.

Maybe some people think a hamster running on a treadmill is going some place, because, hey, it's running and the wheel is spinning. In the end the scernery and where you are is the same, and that's pretty much what shooting Microstock has turned into. Repeat best sellers, if it sells, make more. If it sells, copy it. The agencies don't want expression and creative shots, they want Microstock style and images that sell.
So I'd disagree, if I want to make some money I am forced to create and upload what the agencies have predetermined in their narrow perspective, they want. In that way we are "told what to photograph" and how, and how many.

Sure we can produce anything we want, it won't get accepted and won't sell. If the idea is to earn money, in Microstock, the freedom and artistic side needs an outside income for living and paying the bills.
But maybe that's just me.
When I shoot what I like it goes to Alamy. It's that simple.