We are currently living in a world where the unemployment levels are going through the roof now, with the US reporting a 2,4 million increase in their unemployment levels. Globally 38.6 million people filed for unemployment lately... so money is tight these days for more and more people.
I used to gamble a little with other gambling sites, where their minimum bets was between $50 and $1 but I have stopped doing that now, because my household took a 55% salary cut, due to the Corona pandemic. I think a lot more people would be doing the same or stop gambling, because most sites are just too expensive with their high minimum bets.
Other websites found the solution in allowing people to gamble with other currencies. Because, it is very hard for them to manage like 1-2 satoshi bets so they realized making the minimum bet like 10k satoshi or so, and instead move the smaller gamblers to ethereum or even litecoin and such would be a lot easier for them and a lot quicker for the website as well.
Freebitco.in wasn't like that, you could always gamble with whatever you want, it was always fast, I never really knew how good freebitcoin was until I found out about how many people gamble here and how much is gambled per day, I thought this place was some small place that few people use (like literally a faucet) for probably the first few months I was using it. When I saw the numbers I realized how awesome of a job these guys did.