There are a lot of Chinese devices out there with official android TV that do what firestick does and better with less ads and maybe even less tracking. People wanting to pirate will move to those. Raspberry pi is not cheap or the solution I agree.
I mean even among android tv sticks alone there are plenty of no name chinese options out there, these things are dirt cheap to make and are basically commodities.
any you would recommend that would compete with a fire-stick 4k Max level of hardware? and is open software, but that would also allow the installation of other media apps, like netflix, HBO max, etc?
Xiaomi has a really good one I've been using for years at this point. The 4K one. I'm sure there are more reputable chinese brands with alternatives as well!