People used to all pay for their newspapers. So newspapers had an actual budget apart from ad revenue.
This has largely dried up and nearly all 'newspapers' today need to get their money from ads. Sure, some people subscribe, but it's hardly ever the main income for news organizations (some exceptions notwithstanding, I'm talking about the average news organization here).
On top of that the ad revenue is extremely 'diluted'. Putting an ad in a print newspaper was expensive!.
For an organization who get their main income from ads, tailoring their pages for the few subscribers is hardly worth it.