Some even believe that governments are driving demand in Bitcoin whether they know it or not.
For instance, China and India represent a significant portion of the world's population and each has a rapidly growing middle and wealthy classes. Both of these countries are also experiencing turmoil with government imposed capital controls, so the importance of Bitcoin is much more apparent to its citizens as opposed to North America, for example.
On the other hand, India has less trust for banks than many other nations so some are experimenting with Bitcoin instead. In addition to this, Japan has chosen to regulate Bitcoin exchanges which means traditional financial instructions are now able to offer Bitcoin to their clients bringing in more demand. Whereas, China has decided to implant tougher regulations on Chinese exchanges driving a huge spike in the peer to peer Bitcoin market in China and eventually more trust in the exchanges when they allow withdrawals again.
Another important factor identified for the Asian dominance in Bitcoin is the fact that Asian countries, Japan, in particular, have always been ahead of the curve with mainstream adoption of new technology.
Cell phones, mobile gaming and mobile payments all gained popularity in Asia years before Europe and the US. It seems that Bitcoin is following a similar trajectory.
Do you agree that Japan is leading Bitcoin mass adoption?
Japan is a Highly Industrialized Country. It is only natural that they will adapt Bitcoin because ever since, newest technology is always the newest trend for them (aside from manga). I cannot say that Japan regulates the Bitcoin exchange sites. Maybe it is just a coincidence.