I really think this misses the mark. Grad students don't treat their prof as infallible - at least good labs. In most labs, the grad students are the ones actually doing the work and research. The prof is just the marketing man. And a good prof in CS will understand they're the clueless marketing man. It's not really feasible for them to keep up with writing code and the whole grant writing (and networking with companies like you...) game.

Also I'm surprised that you had academics shopping "products" to you. I've definitely shopped ideas to companies before, but always with the explicit understanding that I'm doing "research" - i.e. you're spending a bunch of money on something that may go nowhere, and you're not going to get a product out of it.

That misunderstanding often makes the conversations end right there.

As a counter, I've found that many engineers will shut down ideas before you can even get started working on them because "no that won't work". It can be very frustrating, as the technical arguments they offer are stiff as a board. And not always as technical as they think.

Granted I work with GPU hardware research, so it could just be a lack of products in this area. Maybe viz? ML especially probably? I get the impression ML profs are a load of shit tbh.