>>32213803Are you retarded? This is the equivalent of asking why most streams are concentrated in the 6-11PM time slot.
First of all, you're overestimating how many viewers can follow conversations in English and still find it entertaining. If you need to get a grasp of average Asian's English proficiency look no further than HoloJP members. They don't live in Scandinavia where at least 70% of local populations are fluent in English.
Secondly, JPs will prioritize their own chuubas and other Asians will do the same. The only ones who'll turn up are tourists or someone who may be a fan but could never catch a stream because of timezone differences.
Finally, you can't just expect huge number of people to turn up out of nowhere when fans who watch them regularly are MIA. Gura never bothered to stream during JP or Euro prime hours except for big collabs or that one time when she streamed RDR. There are certain English speaking outliers like Luxiem gays who have specifically targeted Asian audiences but it took time to build their fanbases and there were no one to contest them.