It's peanut for Casino and sportsbook. A large casino should have millions of dollars of bankrolls.
For some, $7000 is obviously a lot of money, so some are surprised that certain companies spend so much on advertising on this forum. Personally, I wouldn't be surprised if I found out that their direct income from advertising on this forum exceeds their investment many times over - because only one passionate player with a slightly bigger wallet is enough to pay for the campaign for the whole week, or maybe even for the whole month.
As long as there is interest in advertising, we should not doubt that it is profitable for all those who do it, and this means that there is a significant number of active members and guests who regularly browse the forum.