Gossip from a prominent building technologist is 40-80 years for mass produced concrete condos. 80+ years is expected lifespan, if all goes right. 40 is serious

Gossip from a prominent building technologist is 40-80 years for mass produced concrete condos. 80+ years is expected lifespan, if all goes right. 40 is serious structural issues from corner cutting. This is in Canada with bad weather cycles. Usually civil infra has better oversight. It was... a lot less than I expected. But long enough to flip condos for a few more cycles until crazy contingency fees + insurance, which I guess is enough.