Similarly fair point.
I think there's a wide regulatory spectrum available between "ban something outright" and "completely lassiez-faire noninterventionist approach". For stock buybacks, that spectrum includes (and I don't have a specific pitch or favorite in this non-exhaustive, non-mutually-exclusive list):
- Requiring federal approval before a buyback event in excess of a certain value or capitalization percentage, similar to the way that mergers can be curtailed by regulators.
- Restricting the volume of buyback activity per year/quarter.
- Imposing different taxation behavior triggered by buybacks or as a percentage of buyback value.
- Giving the government preferential purchase opportunities in the event of a buyback for large companies (I.e. "you can buy back 10% of your capitalization, but the government reserves the right to instead purchase half of that--5% of your capitalization--at the buyback rate"), under the rationalization that, if you're huge and doing well enough for a buyback event, then you're doing well enough that the public interest should have influence over your business's future.
Previous HN discussions of this topic, selected non-rigorously:
https://news.ycombinator.com/item?id=22616197
https://news.ycombinator.com/item?id=21762582
https://news.ycombinator.com/item?id=20664553
https://news.ycombinator.com/item?id=22606733