Just curious to know what these arrangements are all about? To what extent are they owned and operated by the prime company?

For example, I'm on Boylesports, but I came across Apollobet and the layout is exactly the same and the markets are completely in sync. I'm not a business brain, I dont understand the reason for this, would they have the same staff that oversee aspects of the business or what? Seems to be a lot of these white label sites out there.