the question is which shelves. Not ALL shelves. only 13% of our stuff comes from China. they might run out of toys and electric shavers but there will still be a lot left to buy.
As for toys, most kids don't play with a plastic toy for more than like, 3-10 hours of its existence and then it rots on a shelf or in a drawer until is eventually ends up in a landfill. I'm not going to miss that. I'm sure that someone will point out important things that china makes dirt cheap and I'm sure they'll be right. I personally don't care if clothing options are limited or plastic toys are scarce. The US will not implode.
It really seems like china has more to lose than we do, but because they're a communist country they can just deploy troops to quell uprisings. Tiananmen Square comes to mind. So we play this game of chicken and the media screams that they sky is falling.
Of course the Walmarts and Amazons of the world care, most of what they sell is plastic shit and clothes. I have little sympathy for them.