If Puter/FriendOS can support legacy Windows enterprise apps not updated in over a decade and adds collaboration, SSO, 2FA, access controls, VPN/intranet, etc. - basically what FrontEgg (https://techcrunch.com/2022/07/28/with-40m-in-new-funding-fr...) offers - on top on them, it could be a pretty great business.
This is a great illustration of this type of business: https://apenwarr.ca/log/20120326. A lot of customers totally need, not just want, this type of thing.
Puter/FriendOS type systems can graft upon some modern features on top of all legacy apps, which is far far better than having to build it out for every single one. Especially as the market lies more in the long tail of the custom software tailed to specific companies, that has been chugging along for 15 years in maintenance mode.
So, Wine-as-a-Service?
[1]: https://www.winehq.org/