That's true, the fact that gambling is best seen as a form of entertainment doesn't mean gamblers should dedicate much time to it cause they want to entertainment themselves, infact the more time and attention you give to gambling is how close a gambler is likely going to be addicted, every gambler should have a time frame for gambling so they can focus on other important stuffs like work or investment or even have quality time to spend with their family. Since gambling shouldn't even be considered as a means of generating money then people should give more attention to stuffs that generates money and put food on the table, like work and investment.
You're right,over doing everything can lead us to making such to be in control of us, some gamblers that got addicted today once aproached gambling as being entertainment and fun but at some point they deviated from that cause and began to see from another dimension, they started seeing gambling as the ultimate way to make, infact they started gambling as if they were investing in it for the future, dude I agree with what you said because frequent gambling even when a player has already made the plan of gambling for fun can actually make such player to start doing otherwise unknowingly to him, so it is better we gamble without giving it more of time that should been invested in other things to avoid getting into something we may not like.