But they would have to spend money on tests, wait for them to finish and there might be a possibility tests won't show what they hoped for(even if their hypothesis is true). While speculation is cheap, fast and always trueish enough to warrant an article.

You mean they to hope that the tests would work as advertised? After all we're all in it for the best of the patient and a decrease in healthcare costs or an increase in quality for the same price, right?