Both casinos are modernized and work uniquely. Casinos, mostly, are run by hotels. I don't see a future where gamblers won't visit hotels, or travel on vacations. The traveling niche is filled with gamblers and people who play for relaxation. Unless the world returns to Covid days, nothing meaningful will affect the growth of brick-and-mortar casinos. It'll continue to expand.
On point, in terms of competitive approach offshore casinos needs to keep on track on how their competitors are attracting their clients, to make sure not to lose in the business competitions they need to really make that impressive offers to keep their current clients and to attract more visitors and possible gamblers. Though same with online both business need that kind of updates to make sure that their clients will continue to be satisfied and not left them and find a new place to gamble.
Officially purchased OS and an antivirus 1 year subscription is what most online gamblers have. And saying that offline casinos are not insecure, because there is a story that someone got beaten and robbed. I am sure that has happened not even on a territory of an offline casino. 
