To get a license probably you need to spend from$10K to 100K or even more depends on the license you are buying so its nothing but anyone can get if they are willing to pay the fee for license. Meanwhile to get reputation it may take a while even few months can be enough in this fast moving world, only thing a casino should do is to satisfy the players and give whatever they won with not much of complications.
It is not cheap to get a license but that is worth doing to get trust from the people who will visit and see if their casino have a license or is still in progress to get it.
But whether they have a license or not, if they can not give the best services to their members, that will be useless because their members will have a problem with the services.
Reputation is something that the casino must have, especially if they want to grow their business and reach a big scale in the gambling industry.
I am sure all casinos, especially Roobet, will do anything to make sure they can get the best reputation among the other big casino.