> In my experience, quite a few people say such things elsewhere as well, but if you actually give them the opportunity to do so (even if it's not "a lot", but actually a pretty small fee), such offers tend to perform badly, even among the people who initially requested such a tier,

I used Blende and was ready to spend quite a bit more on it, but they changed their rules and also had do little relevant content that at some point I gave up.

Recently found out one of the linux magazines sell digital articles as well as full digital so I will be probably be spending some money there, both for usefulness, entertainment (yep) and to support a good cause.