No country will own the patent

Hahahahahahaha.

Even worst. A multinational company would own the patent. That guarantees that the price will be prohibitive.

if anything real animal meat will still exist, no outlawing, but it’ll be a luxury, expensive, especially compared with how affordable grown meat could be.

You severely underestimate the utter destruction of a country can be created by right-wingers supported by the US, and the fact that in agropecuary countries like mine, most money is in hands of cattle breeders, no way they will allow their earnings to vanish, even if it's to profit a company in the US, even when they're allies with right-wing, US-loving politicians.