I wonder if it's profitable to run a dice gambling site (like dicecoin.io) ? I'm seeing that site has 30,000
BTC wagered in 2 years.. Huge amount.
Certainly it's not easy to operate, promote and maintain by one person but I can absolutely code a site. Is it worth to start?
Have a good night

of course it is hard work, but to get profit you need lots of unlucky gamblers, and to get them you need to have something unique in your site
maybe interesting design, or something else that will attract them, then it will be profitable for you
Yes, with some other lucky gamblers he will lose some money but I think it will not depend on the luck of the gamblers, but infact it depend on the choice of machine/software. So it will not only benefit the users but the owner of the website will also be benefitted.
But I suggest that he start some other website as now a days he can earn a big amount with any website with some attraction to the visitors.