When this promotion first started a few years ago, the tickets showed up on eBay, then it seemed to slow down. Since you can buy unlimited numbers of tickets, now, I can see there could be a problem. But having to come up with new birth dates, phone numbers and addresses for imaginary people cold get quite complex, not to mention the fact that it's all tied back to you.
If people abuse it by buying too many tickets, Disney may flag their account. The military could be notified. Not to mention you have to shell out the money at Disney and actually go to Disney to activate the tickets. What if you buy and activate tickets and can't find anyone to buy them from you for more than you paid? They're not completely giving these tickets away!
And for us, many family and friends simply aren't interested, because they're going for more than 4 days. Buying two of the tickets brings the cost very close to what you'd pay for a 6 or 7 day hopper, which you can put on your room key for convenience, so most would rather just buy the tickets on their own. And from my standpoint, people are too flaky for us to shell out the money and hope they won't change their minds about going later! Unless they gave me the money upfront, I wouldn't do it for most people.
Some will probably abuse it, since you can buy so many more tickets. But not that many. If Disney just wants to get people into the parks, they should lower
ticket prices for everybody lol.