I think he is not that so addicted to gambling, yeah he do play everyday but just in few hours as you said and he doesn't spend his own money so meaning to say he still have control on himself. He uses only the payment he got from a signature campaign, maybe he is just doing it as pastime
It depends. even without using his money, without using most of his time, sometimes it can be considered as nearing addiction. With the words "almost every day" that is a sign already that his friend is already dedicating some time to it.
Maybe this time it is not yet an addiction, but sooner or later, when he don't change or he is still playing even if it is almost pointless to be there, then he is addicted already.
No, it doesn't mean that if we play gambling daily than we become addicted person in future, Because in my thinking, if we waste our money and time without any thinking, than may be we will be addicted. But if we know our limit and not waste our money and than do play gambling daily, So it doesn't a sign of addiction.
We do many work daily because these works are part of our life, but it has no mean we will be addicted person of these work in future.