Whenever I'm on the purchasing end working for a larger org, it is one of my initial requirements that the potential business partner is willing to extend their trial period, sometimes "indefinitely" (i. e. without an initial spec, cause I gotta talk to teams while getting familiar with Foo myself). I don't think anyone has ever refused, quite the opposite. But if they did, they're automatically off the table, unless they're a big deal such as Autodesk. They usually are not. I've done it a few times as an individual, with the same result. Hence I don't pay too much attention to whatever they say on their website.
