I recently purchased software to the tune of ~AUD$25k, where downloading and installing a trial version makes almost no sense given the target audience: laser cutter, where each model of machine from any specific manufacturer can have a slightly different dialect of G-Code, and this type of software is often way too complicated for the average operator to nut.
So I sent a couple of emails and got swift responses and screen-sharing demos from both companies I contacted.
The sorts of programs I can download a trial version of and have running in half an our or so are nowhere near as mature as the products we short listed.
So I'm going to suggest it depends a lot on the target audience. When you're handing over multiple tens of thousands for a semi-bespoke software package management, in my experience, typically require interaction with a sales agent. This is in the context of physical industry, I can't speak for the software world, where perhaps spending multiple tends of thousands on online services is common? I have no idea.