That's what the chinese thought in the 18th century :).
A fun quote for the europeans here:
"Our land is so wealthy and prosperous that we possess all things. Therefore, there is no need to exchange the produce of foreign barbarians for our own." - The emperor at the height of Qing China
That is the point - the Brits were able to force the matter. If you aren't up-to-date on technology, specifically military tech, you're going to have matters like this forced upon you. Que the Ukraine giving up the nukes (and later getting rid of even non-nuclear missiles).
A fun quote for the europeans here:
"Our land is so wealthy and prosperous that we possess all things. Therefore, there is no need to exchange the produce of foreign barbarians for our own." - The emperor at the height of Qing China