>If vendor lock in a problem if the customer is happy with it? It is up to the individual customer to decide.
No customer is happy with vendor lock-in. It is negative value to the consumer, which was the parent's point.
No customer is happy with vendor lock-in. It is negative value to the consumer, which was the parent's point.
Also, pedantic point, I think you were looking for the phrase en masse, of french origin. See https://en.wiktionary.org/wiki/en_masse