Is a sales agent entitled to termination of an exclusive sales agent contract?

In Nat. Bowling v. Double Diamond the plaintiff was appointed the defendant's exclusive sales agent for British Columbia and Alberta of the defendant's line of bowling supplies. The plaintiff had a meagre sales organization and did not expend a lot of time or money in developing the agency to sell the defendant's goods. After two and a half years the defendant terminated the relationship without notice. Macfarlane J. held that the plaintiff was entitled to reasonable notice of termination, which he fixed at four months.