As an example of this, a good friend of mine happened to wet down both herself and the entire bathroom of a Japanese family as she pushed the wrong button on the panel. For those households with a hole and, for various reasons, without practical possibilities to exchange it for a stool, there is another solution. You can buy a kind of adapter, attach it to your hole, and in no time you are able to sit down. As a whole, as Japan has developed during the last decades, the stool has gained a lot of ground, but not yet completely managed to win-over the traditional hole. The Japanese example is perhaps not possible to adapt directly to the rest of Asia, but that increased internationalisation brings with it the stool is quite obvious.
Westerners coming to Asia want to have things the way that are used to.
The growth of population and income levels in Asia will probably lead to an increased demand in higher standard, better comfort and to some extent the trend might go towards a western styled living. This is happening already in India, one of the so far most closed nations, where the wealthy young people now start to abandon the Asian toilet when building new homes. This can in its turn open up possibilities for business. Westerners should be able to go there to sell and fit up toilets and bathrooms in a fashion demanded by the rich and fancy people. When it comes to giving the same standard to the whole population, even in the countryside, things are more complicated.