> agree to sell the assets of FooCo to BarCo for $1
This is where your analogy breaks. The classic chain was not sold to the forked chain.
It would be more comparable to Alex & Beth getting together and creating new company, copying all the books & records from the old company (that were public domain), minus Casey's balance. Without buying the old company. Customers of the two companies could go to any company at any time they wish, except for Casey, who is not a customer of the new company. That would be legal in US?
There are a few other issues with your interpretation:
- Coins do not represent shares of a company. There's no stock.
- There's no voting: At most, the miners probably have voting power with their hashrate, however as the linked article stated, a soft-fork was impossible to do, so even the miners could not vote.
- Hardfork was not a vote. Even if you said "Yes" to the hardfork config option, you could still go back and say "No" to play with the classic chain at any point in time. (Refer to the screenshot in my OP)