In the long term, yes. But shouldn't we have some compassion for those who get screwed in the short term? The horseshoe makers who were thrown out of work at the time may not have been able to find decent new employment. We have copious modern-day examples of jobs that have been obsoleted and those who were immediately affected still haven't been able to recover.

These sorts of labor shifts can't avoid harming those who get the short end of the stick.

Saying this is not to say that such changes shouldn't happen. It's inevitable and necessary in order for society to adapt to changing conditions. But I very often see a disregard for the reality that people really do get hurt badly in these shifts.