The "industrialisation" concept is an analogy to emphasize how the costs of production are plummeting. Don't get hung up pointing out how one aspect of software doesn't match the analogy.
Are they, though? I am not aware of any indicators that software costs are precipitously declining. At least as far as I know, we aren't seeing complements of software developers (PMs, sales, other adjacent roles) growing rapidly indicating a corresponding supply increase. We aren't seeing companies like mcirosoft or salesforce or atlassian or any major software company reduce prices due to supply glut.
So what are the indicators (beyond blog posts) this is having a macro effect?
If that wasn't the case, every piece of software could already be developed arbitrarily quickly by hiring an arbitrary amount of freelancers.