Chinese shops are very pro customer service, and the large ones I work with are amazing. American shops are god awful in comparison. Designs take weeks to get manufacturing feedback on, if they care to respond to you at all because you aren't in some imaginary box of customers that they want. In many cases if you aren't coming with them immediately with a purchase order of a million units, they just ignore you.
But yea the blockers in the US are immense for more US business growth. If anything in the next 10 years we will see more collapse of US manufacturing as baby boomers sell off their businesses. Nobody under the age of 50 can afford to start a new manufacturing business without VC funding. The cost of real estate is bonkers alone (unless you try and build out in bumfuck nowhere, in which case you now have labor shortages), and the numerous layers of certifications that buyers want you to hold for corporate checkbox ticketing is the cherry on top.