Except it wasn't entirely their choice (to give up their IP).

Most of the companies when those joint ventures were setup were promised or told that their intellectual property was secure. It was then stolen and they were left with regret. Companies which refused to take that risk were compromised by Chinese actors and had their IP taken by force.

For many years the US has had to stop IP theft from China: (example: https://www.justice.gov/opa/pr/us-charges-five-chinese-milit...) and this is simply a cumulation of those efforts.

The blame on China is more than fair.