I'm not them, but the ability to contribute and extend the functionality of the product, whether I ever do it or not, is important to me. As is licensing. I want to build my self hosted stack on things that a company inherently can't take away when they want more profit. With open source, I can go figure out how to build old code myself once I have the code. With closed source, I can't download old binaries if they take them off of their website.
you realize thats not likely to be a thing due to hosting costing money. file hosting in particular is a bigger bill each month while realizing only minimal utilization increase. if its to be 100% free its going to collapse eventually.
search for a subscription or ad-supported system you like. You aren't looking for free software (what OSS is) you are looking for free service (increasingly rare on the internet)