I think its more that anime is still kind of maturing as a medium (though...honestly I kind of mash it together with western animation under 'animation' which...isnt the most popular view)
So right now im not sure we're gonna loose fanservice heavy shows just cause...its still a somewhat immature staple? (albeit one the industry is getting WAYYYY better at handling.)

And I hope im right, cause you can /bet your ass/ I would watch an ecchi highschool harem romance comedy that had an insanely deep and philosophical story.

That said, i'm super glad we're beyond the days of Eiken club.