I had the privilege of visiting a physical casino recently and it seems that most people avoid using such. Generally, most of the gamblers I have witnessed focused more on card games. Rarely do I see people gambling on slots.
The question is- why do people avoid gambling into slots? Though I do understand that the jackpot is indeed high, is the risk of losing money too high that it outweighs its winnings compared to gambling on card games?
Cards can be more interesting when playing live, and most card games are skill-based games! While slots are about pure luck, jackpots (in order to hit some jackpot there's a pretty high min bet requirement) possible bonus win can up to x150k on some slots... but how many spins before you hit something nice?! 500?! 1000?! So it's pretty obvious why more people choose card games...
And I am only guessing, but it's better to play slots online in my opinion! I have a big screen and I nice chair, it's easier to navigate through games than to go from machine to machine!
Card games and slots have no same payout structure as you explained, the RTP can be as high as 99% on card games but the 3% house edge is min expected for slot games depending on the slot provider.
150kx is possible on San Quentin slot of NLC and volatility can go insane on the mentioned provider.