Indeed, which is why the club don't do systems development, and why the ticketing system is the very same as that supplied to clubs such as Liverpool, Manchester City, Everton, Rangers and Leeds.
On that subject, I'm pretty sure when looking around other instances of our ticketing system in the past I found at least one that had a ticket exchange component, which would make me believe we have the capability but, for whatever reason, has not been enabled.
If I received the approach you detail, completely out of the blue, I'm not sure I'd be spending too much time responding either.
Yes our ticketing system is outsourced, and expensive for what it is in my opinion. Maybe the club do have the functionality and chosen not to enable it but that is surprising, given that the exchange only activates once all other seats are sold and would clearly be providing incremental revenue and higher levels of satisfaction.
As for not responding to a cold contact that shows a remarkable lack of commercial savvy in my opinion. I'm sure the club get approached with many ideas, most of which may be non starters but there will be some that are worthy of some level of consideration and the fact that it doesn't come through some personal introduction shouldn't mean it gets zero consideration. I'd be horrified if I thought my Commercial team (when I had one!) were operating like that