When everyone was praising the billionaire who paid for the student loans of that graduating class a few years ago (who by the way is under investigation for tax evasion), I raised the point that this might not be seen as fair by everyone and I was immediately criticized by some friends. I cautioned that it's fine for a private individual to do whatever he wants, but watch out if you apply this some day to the govern…
I think you might be surprised by how many people in that situation would be happy for those who benefited, even at the same time that they are upset that they landed on the other side of the timegate of the policy. Requiring "missed out" scenarios to not occur for any policy like this is too burdensome to society, and too conciliatory to the selfish who would rather the policy not happen at all if they weren't able to benefit from it.