You summed that perfectly. Gambling is matter a of chance not skill. But to make something enjoyable, it has to include skill part. You can't just stake money on dice or play card game for fun alone. There is actually no fun element when seeing oneself losing against the house.
Sports Betting is more appropriate option in this circumstances. It involves set of skills and not completely wagering event. I would say it is 40-60 for skill-chance. There are sites out there where one can create his/her own team and compete against other real human win real money the same time. Much more fun, isn't it!
Even games with no skill element can be fun, people enjoy the anticipation.
Though I invested to Bethash competitor, I'm also interested to that Banker's Bull, it only asks 10K TRX to be part of it. I have tried several times their Blackjack 21 but it find it not fair unlike their dice. There isn't a lot of games in Bethash. How much have we earn in banker's bull with 10k TRX?
I haven't invested in Banker's Bull yet, I am still saving up to reach the minimum investment threshold. For now, I just enjoy the game.