Hi! Have you ever tried to invest into a gambling site? and my question is, is it worth it? Considering that you will not be a player! but you will be the house (not actually the house but some part of the "house" LOL), Your portion of investment will be part of the gambling website's bankroll and if they win you also win! and if they lose you will also lose.
The downside of it is, if you are going to invest, 2% of your total investment will be the fee (2% on the most of the gambling website that I see). So are you going to try it? It is going to be okay if you consider long term investing but if your motive is for short term, I think not.
Is there any people here have tried it for a long term and does investing on it, is worth it?
If you are interested to know what gambling website's are offering Investment, you can check this website:
https://dicesites.com/They list all of the website's offering it and additional information for it.
Your website is only listing dice sites! Why it doesn't talk about other platforms like Rocketpot for example?

By the way, why there is always this 2% fee

Not 1,5%, not 2,5%, no... always 2%... Where does it come from please?
Not necessarily dice sites but online crypto casinos. Dice is just one of the most popular, if not the most, casino games. However, Rocketpot is not offering dice games if I'm not mistaken. It is offering a crash game. Nevertheless, it is still a crypto casino and it also offers bankroll investment opportunities to interested investors. I think only crypto casinos are offering bankroll investment opportunities. Sports betting platforms do not need bankroll investors because opposing bets are enough to pay for the winners. And gamblers are not playing against the house.
Please correct me if I'm wrong. I think you are referring to that dilution fee which is taken from a new investor and fairly divided among all earlier investors according to their stakes. You will also receive a portion of this fee if another investor comes after you. This is not always 2%. I think it varies from one casino to another.