Just considering news--Moby Dick is 1.2mb uncompressed in plain-text. That's lower than the "average" news website by quite a bit--I just loaded the New York Times front page. It was 6.6mb. that's more than 5 copies of Moby Dick, solely for a gateway to the actual content that I want. A secondary reload was only 5mb.
I then opened a random article. The article itself was about 1,400 words long, but the page was 5.9mb. That's about 4kb per word without including the gateway (which is required if you're not using social media). Including the gateway, that's about 8kb per word, which is actually about the size of the actual content of the article itself.
So all told, to read just one article from the New York Times, I had to download the equivalent of ten copies of Moby Dick. That's about 4,600 pages. That's approaching the entirety of George R.R. Martin's A Song of Ice and Fire, without appendices.
So all told, if I check the NY Times just 4 times a day and read three articles each time, I'm downloading 100mb worth of stuff (83 Moby-Dicks) to read 72kb worth of plaintext.
Even ignoring first-principles ecological conservatism, that's just insanely inefficient and wasteful, regardless of how inexpensive bandwidth and computing power are in the west.