The requirements for an online server imply not only organizing the hosting, monitoring, upkeeping, etc.
It also means implementing into ERA support for multiple gaming groups at the same time, or some form of login.
This also means designing, organizing, developing and maintaining a subscription for users.
Content available for each group would depend on customization and packages purchases, so it would be a nightmare of database maintenance.
On top of all that, since the content offered is ICE IP, the legals around it would be way more complicated than the current arrangement drafted for ERA.
Despite all those complications, the option of going this route was offered some years ago in an online survey to users at that time, and there was little to no interest. Pandemic times have surely changed that, but they have also heavily cut the time available for developing new features in ERA, and the online server is just too much to be done at this moment.
Thanks for the suggestion anyway!