Yes, You can become addicted to cannabis, but similarly, you can smoke it long-term without becoming addicted. It all depends on the person. A person with an addictive personality would become addicted to whatever happens to be accessible at the time.
I know people who've smoked dope regularly for 20? 30? years, but are not addicted to it whatsoever, and others who can't go 2 days without the stuff.
It varies.

Hope this helped