linuxmemes

If the proprietary extensions don't add significant value, nobody would buy it in the first place.

That's the beautiful thing about gifting software with permissive licenses (when one wants to): it's a gift and anyone can do whatever they want with it for free.

ETA: I DO think that it is important for one who chooses to license software permissively to be informed about their decision and its implications. But, just like consent in other areas, as long as one enters into it intentionally and with the understanding of what the license means, it's noone's place to judge (and, like consent in other interpersonal areas, the license can be revoked/modified at any time - with a new version). Honestly, really weird of those that take issue with individuals choosing to gift their software to humanity - there's way more interesting and useful things to engage in in the FLOSS landscape.