Well, I would say that I'm definitely not in a small niche. And can definitely confirm that most companies pay via check and Wire/ACH. Especially in the B2B world. B2C is a bit different where the company price point is low. For example, most software tools (IntelliJ, GitHub, etc) CC is more common. But for larger services where it may be many thousands a month, your claim does not seem to be the case from my experience.