It's also cheaper for them because they get to make less content. Not to mention the season pass which has double fillers and is time gated like the story.
This here was a design decision that killed destiny's potential in the name of greedy management wanting to rule the world.
Remove half the game, filter it back over the next 4 years, freeing up 80% of the staff. Put those staff on 5-6 other hibernations & boom a 5-6 game studio funded by destiny.
But they got it badly wrong, nearly went bust (again), alienated everyone & are now on the verge of not having control of their own studio