Early on as in age of people, not the country. There also have to be opensource alternatives to get people with. If most of the stuff that's easily available is closed source, people will use closed source.

Furthermore, access to computers with which to make games still can grow a lot in Asia - I'd say more than in Europe or the US. You can look at numbers of device usage per country provided by Cint. India, Malaysia, Myanmar (well there's a war there now), Indonesia, Nepal, Pakistan, Afghanistan, Bangaladesh, and more countries in Asia have less than 30% of PC usage. Those numbers hover around 45-50% for European countries, North America, Australia, Russia, and a few others I'm probably forgetting . I'm sure you can find more up to date numbers with a possible separation between laptop and PC, but regardless, it wouldn't surprise me if the numbers were about the same or climbing.

Combine that with the direction Macroslop is going, exposure to Linux and other OSS will probably increase. Yes, new generations are very mobile phone heavy, but game development will probably happen more on beefier machines, which Asia is slowly getting access to at an increased rate.