I imagine if permission is granted he will simply sell the land to a developer. A farmer local to where I live was offered an eyewatering, life changing sum (many tens of millions) for some land that doesn't even have planning permission. The developers just 'bank' land and are prepared to play...
Well, yes. I agree - it shouldn't be that complicated and many smaller, more nimble organisations just seem to get on and do it. It's only when simple initiatives meet large organisations that everything suddenly becomes all too difficult. The amount of revenue is probably not a huge motivation...
It's all okay until someone gets knocked over and injured or worse and then (notwithstanding the fate of the unfortunate person), the legal problems and arguments over liability begin. It really isn't worth going anywhere near it for the rewards on offer.
You'd think so but in the end once they have had to do risk assessments, create a 'no liability for loss, damage or theft' policy, found people willing to marshal it plus change the terms of their insurance and public liabilities, it's just not worth the effort. A company I know of wanted to...
Couldn't you pull in a few favours and work the old contacts book from the world of academia and approach someone at Sussex university? I'm sure they must have a little out-of-the-way space somewhere that a fellow prof. could park his car for a few hours very other weekend....