It's useless to spend that huge money on advertisements, Casinos will do a feasibility study first on the best platform to promote their casinos, We are talking about casinos where there are high restrictions on specific audiences and a lot of requirements to broadcast your ads and all studies point to affiliate marketing, partnerships, and specific platform to launch their marketing campaign.
I don't know if there are casinos that spend that huge money on a regular basis to advertise their platform using social media, Casinos know what they are marketing and where can they market it that is why we have so many active marketing campaigns for casinos here because it worked.