I'm really glad to hear that! Thailand needs more of that. I think most Thais listen to Thai music, but I still feel the Thai fans are more willing to pay for K-Pop merch & concerts than local artists (just a feeling though, don't know if it's like that in reality).
I feel the reason that there's a lot of Thais in East Asian entertainment is because it's seen as the default producer of idols/entertainment content from SEA in the eyes of East Asians. Like there's tons of Thais active in K-Pop in Korea, lots of Thai celebrities in China (Thais usually make up most of the Top 10 Weibo Asia Pacific celebrities list), and Thai BL/drama is super popular in Japan right now. This is all quite surprising considering that most Thais don't really speak other languages like Filipinos (who speak fluent English) or Malaysians (who speak Chinese/English).
I think once we start getting artists from other SEA like Philippines, Indonesia, Vietnam debuting in these markets, then it's only a matter of time before you get other Non-Thais SEAsians being active in the East Asian entertainment industry. But on the other hand, more than that, I wish SEA nations can create our own entertainment industries and our own 'SEA Hollywood' so that our kids don't have to leave our countries to go pursue their dreams overseas.