Eh.. I understand exactly where they're coming from. If you're trying to make money with a product then this is something that can happen. You can argue all day long that it's no longer technically "open source", but IMO for 99% of usecases (anything that's not a Confluence integration), it still is... even still non-copyleft.
Of course there will still be people that argue open source is antithetical to capitalism in general... but not everyone agrees with you.