.Why aren't there plus sizes for lolita syles?
Lolita style comes from Japan. There are very few plus sized girls in that country. You might want to buy something with shirring though, I've seen a lot of bigger girls get into those and look quite cute.
.Do they have companies in japan for plus sizes?
See above.
.Do i they hate plus sizes?
If I understood your lack of grammar properly... Sadly, I believe the majority does. While in the west people lose weight to FIT into brand, people in Japan lose weight because you're simply prettier that way. If you take a look at Popteen for example, they have a lot of advertisements for weight loss pills, and their before-after pictures usually have weight loss from 45 kilos to 35, or something around that.
If you're looking for lolita clothes in plus sizes, you can either get something commissioned, or look for something with lots of shirring from brand. If you don't like those ideas, I don't suppose there's any other choice buy weight loss. I myself am a bit on the bigger side (157cm/53kg/70cm waist) and I'm planning on going down to a 55cm waist so I fit into Mary Magdalene. Go figure.