Once upon a time newspapers were the platform, and they made quite a bit of money selling access to eyeballs. If you wanted to get a message in front of a lot of people, you had to pay a newspaper to do it.
Now on the internet they don't own the platform anymore - tech companies do. Newspapers are just content creators, a much less lucrative business to be in.
In the beginning it was eBay and Craigslist siphoning out the classified ads. Then it was AOL, Yahoo, ICQ and YouTube taking away the attention and eyeballs (before the smartphones era). Then came smartphones and social media.
Same with magazines. There are some niche magazines that still do alright and also what were niche broadsheet publications became online subscriptions where they offered the subscriber an ROI of some kind.
Would news be in a good place if they had the monopoly for online advertising?