you mentioned 90% will lose in anything gambling related. I would first argue the percentage but that would be a different topic. instead I will ask you this:
why 90% lose? here are a few reasons:
1. lack of
bankroll management2. lack of
experience3. lack of
strategy in executionthere are cases of successful gambling stories, right? some dude is a millionaire playing blackjack.
how did he do that? by understanding bankroll management, financial management. by taking a boat load of blackjack hands, improving his experience in making decisions and of course by finetuning & mastering various strategies. are there people that made millions in poker? Daniel Negreanu might be a good reply on this one.
how did he do that? well bankroll management, experience, strategy, etc.
long story short, most of the people that go down the gambling rabbit hole want the "get rich over night" shortcut, however as any other valuable thing in life, winning is something hard to achieve. and that is why, indeed, the majority lose.
as for the "without telling them the terms and conditions" in regards to first deposit bonus, I mean come on now. say you've won $100k and you want to invest that into stocks, ETFs, investment fund or something similar. does the broker spill out the "terms and conditions" for you? 100% not. however he will for sure be happy to clout to his friends/colleagues about netting you into the firm an thus earning his commission. the decision of depositing balance into an account on a gambling website belongs
to the user 100%. therefore the responsibility to understand the terms and conditions as well as how bonuses operate
belongs to him.
regarding influencers, imo and without any form of disrespect, they are nothing but tools. imagine for example the classic marketing billboards. that's influencers now. a billboard that can speak and maybe do stuff. however their essence is the ability to attract attention, therefore they can be used to market businesses. may it be gambling or otherwise. a perfect example, even though he's not an influencer as per say, would be the move of Cristiano Ronaldo to Juventus. how many shirts has Juve sold? then to Manchester United and now to All Nassr. again in both cases, how many shirt have those teams sold? how much did their social profiles grew after he joined the teams? and so on.
in the end you requested opinions on "what type of many people are, like greedy, only thinking themselves and their family, egoistic, thinking in a bad way, just trying to keep everyone down, or people are good". my personal opinion is that there are many characters out there, from egoistic to altruistic and beyond. at the end of the day, it matters for you to climb one more stair on the ladder of life. the fact that the stair you've climbed is financial, or helpful to other(s), matters less. at the same time, for the past 2.000 years, not many have turned water into wine, or fed five thousand people or other things like this. in fact, no one did such things. however for the past 2.000 years or so, people have been gambling.