Years ago, a guy from a dating app asked me out for lunch, so I went. He was an oil and gas engineer, and he told me he asked 10 girls out in two weeks when he was not offshore. He said out of the 10 girls he met, he liked 4 of them, and I was one of them.
After lunch, I paid for my own meal (around RM30) because he wanted to split the bill. That's when I realised why men became calculative with a single meal despite their high earnings. There are men who frequently use dating apps to ask girls out + want to keep the dating costs as low as possible for their own benefit.
In my twenties, I went out with about 26-30 men for lunch/dinner dates (they asked me out), and only 2 didn't pay for the meal. The oil & gas engineer was one of them, and the other one was a relationship manager for a wealth management consultancy. The latter then liked me further and brought me to expensive restaurants. He then explained he didn't pay for the first meal as he had met too many gold diggers. After we got to know each other better, he pampered me with fine dining.
So ya, just sharing some male psychology and behaviour that I observed. Based on my experience, 9 out of 10 men would pay for the first meal. The 1 man who didn't pay probably had some motive/concern as I shared above + other possible reasons.
In general, if a man asks a woman out, he pays for her meal... unless the woman insists on going Dutch.