My reply is a 2 month old bump... but this, necessarily, is what caused the problem. Laziness, ease of throwing things together, slapping a bunch of ads together, internet becoming more of a profitable means of distribution = easy money for people.
The modern internet doesn't seem to stick out individually anymore though, it's all bland, and I guess it's down to ease of just throwing together things that way. I guess that also partly influenced (or vice versa) why a lot of big websites have over the past eight years or so removed many 'custom profiles' (making them more generic), and overall deprecating things that give a sense of community unless it is somehow profitable to do so for businesses as well.
My biggest concern is accessibility, which is essentially thrown out of the window for slower-developing countries with lesser access to fast-speed/always-on Internet; oh, and small-screen devices, due to the more-than-useless cookie consent banners the EU imposed on the world in 2012, that can't even dismiss the stupid prompts without messing with the zoom settings.