CHICOPEE, Mass. (WWLP)– Nearly five years into the legal sale of cannabis, Massachusetts has seen gross sales reach over $4-billion, but how long can the state maintain that momentum?

Surrounding states have begun to legalize cannabis, which may take a bite out of local and state revenue. Some initial investors in Massachusetts may be moving on to other states to cash in on new territory.

The 22News I-Team examines the challenges and changes to the cannabis industry in Massachusetts. Watch 22News I-Team reporter Kate Wilkinson’s report, Thursday on 22News at 6pm.