NPR did a podcast on those “bumpers” (there’s a term that I don’t recall). HBO wanted to change theirs for the reason you indicated as well as the fact that it was rather long compared to Netflix’s and others. They paid a lot of money to develop others and also do testing\ polling with end users. The original beat out all the rest because it’s been their bumper for so long.
For sure games since they offer a lot of replayability. Maybe some reaading materials since they also don’t occupy a lot of space.