Those who forget history are doomed to repeat it. The mixed history of NFL teams in Los Angeles is well documented. Add to that the infrastructure woes of SoCal, and the end result will be the same as with the Raiders, early Rams, etc.
The other thing, I think is the statdium they are currently playing in is HUGE... it seats officially 93,000 plus... Even if they had reasonable attendance of 50 or 60,000 per game, the stadium will still be insanely empty.
Heinz Field for example officially seats 64,000 or so, a full 1/3 less than where the rams are playing. And this is a team with one of the most loyal fan bases in the NFL.
Yes, there are bigger statdiums... Cowboys seats 100k, Green Bay seats 81k or something like that.. but these are all teams that have been in the same towns for insanely long times....
Combine that with the fact that the LA now has 2 teams, not one, Chargers and Rams, you are going to see cannibalization. Last year the Rams actually had reasonable attendance figures, for a first year team, not great, but not bad.
The SJW nonsense probably doesn’t help, but the Rams problems are more to do with rebuilding the brand in a new town with a far to large stadium and another competitor , even if crappy, in the same market.
If the Rams keep winning, I’d expect their attendance to grow, but still I think it will be a LONG time before they can consistently fill a 100k stadium .