Most customers never contact your sales team in the first place if they see that you do not support their stuff.

This very much depends on the product but note that is exactly why I listed other possibilities. If Linux support was a big opportunity they’d know — maybe not precisely but enough to know it was hurting them.

I’ve been using Linux for around 25 years, some of that selling commercial software and most buying. There’s a very noisy contingent of the community who make a lot of noise but never actually buy anything. You’ll go broke chasing their feature requests because there’s always one more thing before they can switch.