Why can't it become popular, even though the races are so attractive that few people want to miss it. For racing, people often watch rather than bet, why?
-snip
The tournament is always a nail biter, that even the best of the current roster may still trail behind with just a single error. It's extremely risky IMO, thus making it, in my opinion, not a viable tournament to bet on. Crashes often occur on MotoGP than any other motosport, which may immediately result to a loss of a contender. This is, of course, just my opinion as to why people just want to watch it rather than bet on it.