Just an example. ONE pays fighters from certain countries / regions based on the economy they come from. This is like a great way to pay fighters shit. The UFC pay is always based on USD. Mexicans and Dagestan fighters were examples to make he way ONE pays Indians and Thais.
I met someone who works at Google yesterday and I live in Asia. Pretty sure she doesn't make as much as the people who work in the US branches.
Their fighters still make good wages and there is a big difference between being paid based on your residency versus your nationality. Most of the foreign fighters in the UFC live in the States or other high cost of living areas, they do not actually reside in their "poverty" countries.
Furthermore, Thai's are literally paid higher in ONE than anywhere else. The Thai's are competing in Muay Thai and Kickboxing which are lower paid sports than MMA. 100,000k USD in Muay Thai is top tier pay regardless of what country you are in.
What Thai MMA fighters are there in ONE? Maybe I overlooked someone. The only one who I can think of is
Stamp Fairtex. Isn't she paid well?
50k bonuses for ONE means a lot more than 50k bonuses from the UFC on average. The UFC is a fully oiled and profitable machine, 50k should be nothing for them - most of their fighters live in Western countries where 50k doesn't even go far.
I get what you're trying to say with the cost of living thing but I think you're being overly simplistic about it. ONE is based in South East Asia, its target demographic is primarily South East Asia and its roster is made up of people mostly from South East Asia. The UFC wouldn't pay most of those guys anything as they don't care about having shows in those places in the first place.
They are cheaper than ONE even if they are paying more in a vacuum. They are probably cheaper than Bellator and PFL as well. These companies are way smaller than the UFC.