I'm guessing the coverage will just get relegated to LOITV.
I think it'll be an acceptable alternative as long as it's temporary. There's no point speculating on when fans could be back but people will be disappointed if this is the only coverage for the rest of the season.
To be fair to the FAI I think they've done as close to as best they can in a pretty dire situation if they manage to provide coverage of every PD and FD game this season.
I'm not sure if clubs would have been in favor of WatchLOI being available in normal times for fear of it affecting attendance, but I think LOITV's product is just about bad enough that clubs might be happy enough to have it there as an alternative option. (Would probably need to pay closer to the equivalent of a matchday ticket)
Personally would be absolutely devastated to lose the streaming services as an exile, my interest in Irish football has grown tenfold since actually being able to watch games for the first time in 5 years or so.