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Stake should be open for a possibility. If the needs arise and the gambling trend goes to tokenized casino, and assuming the means of tokenizing casino is now legit to any jurisdiction, then it won't harm Stake to go with the trend. with their huge usebase and huge number of whale players, I never doubt that stake will be successful in launching his own token. But right now, I also do not think there is a need for Stake to launch his own token. Stake marketing strategy and promotions are very effective in keeping and inviting new players. That said, I believe it is enough to keep Stake on the top.
Stake could be among the few casinos out there on the internet that has a chance to successfully pull of an ICO of such proportions, granted that the authorities would not prosecute Stake because of it.
Actually, I believe it would be such a big deal, that such token could attract most of the liquidity and marketcap of the rest of the gambling token market. Of course, It is all just speculations. Stake already is doing well and does not need to do such thing, as you said.