For how long though? China has had a market economy, in some sectors on its economy only, for a couple of decades. The UK has been struggling with democracy since Cromwell. You can't expect them to converge in a time scale measured in less than generations.

Taiwan and South Korea were both authoritarian within my lifetime. Now both are clearly dynamic democracies. Not perfect ones by any means, but dramatically transformed in a single generation.

Some will change faster than others, and who can say when any given country will pass the tipping point? But can't you really authoritatively say that it's never going to happen?