Why openai is the only AI that is restricted in too many countries?

I’m just wondering why Openai is the only AI website that is restricted in too many countries? I was trying to subscribe so this tool can help me in my work, but it ended up with failure so i decided to use another AI website.

I just need to know a reason!! why?!

because the people in your country pose significant threat to american’s national security-- either in the past, currently or, in the future.