Do you want to know why?
(New) Tariffs on newsprint paper from Canadian mills. Paper is about 30% of a newspaper's cost of business. Because modern newspapers also have an online business, and because online ad revenue is much, much lower than print ad revenue per reader, a disproportionate amount of it's costs rely on the paper product, so the impact is even higher overall.
US domestic mills don't make enough to satisfy demand, even though demand is way down from a decade ago. So papers must buy at least some paper from Canada, and the tariffs have allowed US mills to raise their prices to equal the market price overall. And US domestic newsprint manufacturers are not going to actually increase production, as their own bean counters tell them the demand for the product will continue to fall over time, so they are not willing to invest in new facilities or upgrades.
Along with raising subscription and single-issue prices many newspapers have laid off staff in the recent months as well.