If a newspaper in a town of 1,000 people was devoting half a year of a reporter's work to a single investigation, that newspaper was already going to fail as a business. Even if every link to the eventual story required the linker to pay €100, because in that case people would just refuse to link.
There is nothing good about link taxes. And sufficiently advanced incompetence is indistinguishable from malice.
Meanwhile, this cannot help even responsibly-run small news organizations, because it will just direct all the large aggregators and large news companies to make deals with each other, and the small news companies will get zero links and collect zero "link tax", and small/new aggregators will not be able to afford to operate. Result: large organizations stay large, small ones continue going out of business.
Someone on Twitter earlier was saying journalism has a history of relying on rich people who don't mind losing money (the modern example being Bezos and the Washington Post), and that we're trending back that way. Anyone who can't find a patron is probably going to go out of business no matter what.
(unless you'd like to have news organizations be funded by government, which can work but has its own set of problems)