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I know what you mean, but sometimes it isn't pure nostalgia. I like hand-drawn non-CG animation a lot, but there aren't a lot of animated movies coming out now that have it. And cultures can change dramatically too. I liked it better when people weren't so distracted by their cellphones. (This is a fairly small change.)
If you really want blatant commercialization, see Pokemon, Digimon, Yu Gi Oh etc. The latter at least had an interesting plot, and deeper characters. But both are basically cheap adaptations of Japanese anime -- draw a few frames with action lines, sell millions of trading cards. Compare that to, say, Spiderman for FOX Kids in the 90s. Every scene was carefully animated and the plot was deep. And to prove it's not ju…
It may be possible that there is almost too much focus on "quality" now but it's the wrong kind of quality -- lack of errors, linear predictability, control of financial risk in the business of storytelling. Today's cartoons do not take risks, economic, artistic, or political.
I've been watching He-man b/c s1 is free on Prime, and noticed that wow the cartoons are way more interesting than the crap that's on TV today (Thomas-the-Preachy-Tank-Engine; Bob-the-Incompetent-Builder; etc.). There basically is no such thing as Saturday morning cartoons anymore! WTF?! But my son doesn't care. He isn't into He-man, and he does not seem offended by the preachy morality of today's kids' shows, or their slick ultracheap CGI...