Those regulations prop up Chinese businesses at the expense of economic efficiency (higher costs for consumer goods).

To your point, it's not necessary or beneficial (in general) for US or Europe to act similarly. Western industries are highly developed and specialized, such regulations hurt consumers in order to prop up industry. So sure, if you want your manufacturing and textile jobs to stay in your country then you can have such regulations, but the cost of that is everyone in your country pays +X% more (in value, e.g. higher price or lower quality) for textiles and manufactured goods, which is what the Chinese consumer is doing right now for cars and every other highly regulated import good.