Correct, Casino startup nowadays invest huge funds on there casino product before they launch there tokens to the public. Most of them has a gambling license and working casino with real players unlike startup casino before that building from scratch using the funds from ICO sales which already proven that is not feasible at all because al of them died in the process die to limited funds.
And I never trust those casino who start with ICO because we don't know if they can provide quality platform for us to play like top tier casinos exist here. Also to many scams are already been happen so I better trust only those casino which is reputable already which release their coin because we have some assurance that they will not get rigged. The tokens mentioned by OP is actually not bad option and its up for investor if they take risk to accumulate those tokens.