Sounds like they don't love spending multiple person-years on ports + maintenance to expand their userbase by 1-3%. At their scale of operation I can understand

Sounds like they don't love spending multiple person-years on ports + maintenance to expand their userbase by 1-3%. At their scale of operation I can understand it, even if I personally ship Linux game ports. Once they sell a Linux user a copy of <game> for $60 they have to keep supporting it.