See, if that were true, then why isn't this something that companies do? My guess is that the problem is so rare, and the result of the problem is usually so minor (nobody dies, the company itself probably doesn't even pay for it due to insurance, etc), that it's simply not worth it to have this kind of thing available.
What about starting your own company that provides this kind of service? You only need to be at one airport in a given metropolitan area, so you can pick one with a nice long runway and lower costs for operation. Keep trained staff on call 24/7, make sure all the local airport towers are aware of your existence and can get in touch with you and redirect aircraft appropriately.
Could you expand to smaller GA planes for gear-up landings as well, such as the small twin that was linked earlier?
Let's say, hypothetically speaking, you could handle all-gear-up landings (plane just sets down on top of your vehicle) for anything up to light twins, single-gear-up landings for anything up to the light commuter jets, and nosegear-up landings for anything bigger.
How common are these incidents? If you successfully handled 100% of the incidents in a given metro area, what would you need to charge in order to make a profit?
