Yes, during the height when bitcoin fees are high, even gamblers are looking for some payment options. Others uses altcoin instead of bitcoin that time because of the fees. But not to burst the bubble to the OP, I think majority here, please correct me if I'm wrong haven't had explored LN payment scheme. Of course, this can change overtime, when investors or even ordinary users of bitcoin might really see the advantage of LN, (fast and fees are low). But most are old and traditional way of using our bitcoin, a bitcoin address for deposit and withdrawals.
There are some people argue that it's bad to use Bitcoin to gamble because Bitcoin price may pump high and they're regret to spent Bitcoin when it was cheap. 
To open a channel you need to pay Bitcoin using on chain network, not to mention you need to convert Bitcoin on chain to lightning network, which make lightning network isn't really cheap to use. If there's an instant bridge and cheaper while open a channel, many people might use it.