YSK: While you're on Lemmy/Kbin/Fediverse, you're not "the product" but you're also not "the customer".
Why YSK: Getting along in a new social environment is easier if you understand the role you've been invited into.
It has been said that "if you're not paying for the service, you're not the customer, you're the product."
It has also been said that "the customer is always right".
Right here and now, you're neither the customer nor the product.
You're a person interacting with a website, alongside a lot of other people.
You're using a service that you aren't being charged for; but that service isn't part of a scheme to profit off of your creativity or interests, either. Rather, you're participating in a social activity, hosted by a group of awesome people.
You've probably interacted with other nonprofit Internet services in the past. Wikipedia is a standard example: it's one of the most popular websites in the world, but it's not operated for profit: the servers are paid-for by a US nonprofit corporation that takes donations, and almost all of the actual work is volunteer. You might have noticed that Wikipedia consistently puts out high-quality information about all sorts of things. It has community drama and disputes, but those problems don't imperil the service itself.
The folks who run public Lemmy instances have invited us to use their stuff. They're not business people trying to make a profit off of your activity, but they're also not business people trying to sell you a thing. This is, so far, a volunteer effort: lots of people pulling together to make this thing happen.
Treat them well. Treat the service well. Do awesome things.
...I'm sorry, but blind positivism won't get you, Lemmy and nothing else to anywhere. Nothing is perfect neither free of "predatory capitalism" -- one day, you will "be the product". And there is nothing you can do about it, because this world ain't a fairy tale where we've got fairies flying around and giving us anything we want -- we need money. And lots of it.
Shout at me, swarm at me with negative downvotes like it's the best thing you can do (which probably is), but this is the real world, giving it to you with a couple words, fair and square.
I think part of the beauty of the Fediverse is that nobody definitively holds any cards. Don't like Lemmy.ml? Fine, setup Lemmy.world. Don't like that one? There are other options! The ability for folks to interact with one another without having to generate new accounts is a major benefit. There are still some growing pains, but I think we're on a pretty solid path.
My only concern is about excessive consolidation making de-federation more feasible and leading to high cost pressures (I know Lemmy.ca admin mentioned their costs and it was growing quite a bit). We have some folks looking at ways to address this and to possibly bring improvements to Lemmy code with respect to scalability. Fingers crossed!