WSJ article today: “Along the way, Huawei has been dogged by al­le­ga­tions that its gains came on the back of copy­ing and theft. A re­view of 10 cases in U.S. fed­eral courts, and dozens of in­ter­views with U.S. of­fi­cials, for­mer em­ploy­ees, com­peti­tors, and col­lab­o­ra­tors sug­gest Huawei had a cor­po­rate cul­ture that blurred the bound­ary be­tween com­pet­i­tive achieve­ment and eth­i­cally du­bi­ous meth­ods of pur­su­ing it.” https://www.wsj.com/articles/huaweis-yearslong-rise-is-litte....

My point is different.

We are and always will be uncertain who is spying. Further, we can not even say whether Huawei is a sincere market participant (although here the case is much clearer against it).

If you wait for certainty, you will lose. Its a political decision you can agree or disagree with.

But if it has been made, and for good reason in this case, then you will not fight ip theft and chinese protectionism and anti competitive behavior with small measures.

Op asked why ban Huawei instead of not buying from them. Because it is ineffective.