I said this before when kissmanga was still alive, If only Japan has polygamy marriage legal, all these triangle would simply lose it's value...
put in place restriction and rules to the practice, like some countries do (applies only to locals/ financially/physically able to support multiple partners/etc) and suddenly harem ending is not just a dream anymore....
well, whatever I guess, not like they gonna suddenly pass a bill from a random comment section... right? unless....
P/S: there was a story (or two) where one of the side girls went into politics/became Jpn PM and fought to legalize polygamy in Japan... forgot the titles tho...