If they put "win client coming soon, sign up for updates" to get how many people even want it, that would be at least something. But this "only ios and android"

If they put "win client coming soon, sign up for updates" to get how many people even want it, that would be at least something. But this "only ios and android" philosophy, i just don't get it. What kind of smart business decision has to be to rule out 80-90% of users!?