Well why doesn't the government just tell us which is the best product of everything and ban everything else?
Seriously you guys are so blind.
I've read about how they banned all other toilets but those with a certain water saving flusher.
The end result was that people couldn't freaking get their shit down the toilet, but the manufacturers of those kind of idiotic flushers made good money thanks to the government. Those who made water-consuming flushers had to adapt and start producing shitty flushers to stay in business.