That's not true, if the games are not played you get your money back.
Directly from the Blue Jays ticket Q&A
Q. When the Postseason ends can I request a refund instead of a credit for unplayed games?
Yes. If you would prefer to have a refund instead of a credit towards your 2017 Season Tickets purchase, please notify the Club by contacting your Account Executive before 5:00 pm on November 16, 2016. After this date, a refund will not be available.