How can one "steal" something as complicated as 7nm? Did SMIC find a full manual on literally hundreds of thousands of small little decisions that go into making something as complicated as advanced chip manufacturing?
Perhaps they hired people from TSMC? Maybe paid them more? Seems like capitalism then.
Also, this is what happens when the US deny China tech. Yes, they'll fall behind shortly but they have the manpower, will, and intelligence to fill the gap sooner or later.
If the US wants to maintain tech advantage, open up immigration and make it super easy for intelligent people to immigrate and live here. And welcome them instead of being racists to them so they stay.