Gambling is an industry for owners and for customers gambling is a game now it depends on which side you look at it from
What you said above all right can be called a career can also be called a troublemaker all possibilities can happen
But in general, gambling is not part of a career because it causes more problems than profits this reason can be admitted because almost all casinos make a profit.
Only business owners are the ones who would really be fitting out that kind of title speaking of career since its a business which you do need to take care off but for people who are playing on it then i dont really see nor
even ideal on calling it as a career since it was really meant or for the purpose of entertainment but we know that there are people whom do call theirselves as professional gamblers which might be considerable
but not totally ideal nor suggested to be done since its not something that you could really able to sustain for long term.
We know on how gambling works and what are the odds which you should really be careful on dealing with it.