Amit, I differ a little with you here. This is my personal opinion and subjective too that either it is Toyota or Maruti and anybody else, most of the time the sales figures are the babys coming out of half-knowledge buying decisions and most of these decisions are very much influenced by their friends,relatives and reviews on the net which are completely biased most of the times. So by the time they notice that they did a mistake, the product is already bought by them, hence to live with it.
Next, the product is bought knowingly or unknowingly and they cannot reverse their decision immediately which involves financial implications, ego of their selection linked with reputation within their own circles that within a short time they cannot go and say that my decision was bad, so all this leads to a situation called "living with the things" whether the product is good,bad,worst AND since you live the thing what you do you need to praise the product forcefully though you do not like it from the heart and keep saying to your self & others "yeah all is well, excellent, VFM, very good handling" and what not, so obviously to support your own bad decision keep supporting the brand and ending up suggesting the same bad decision to some body else by mouth or with reviews.
Just think how many of us really listen to what our heart says and pen down the same thing either it is good or bad or worst in our writings, you find only very few !!
So this is the real scenario which is happening very much in the market now.
I again reiterate that this is my personal opinion and subjective research and not general statement