It's certainly reasonable to expect that making economic activities more efficient ought to increase opportunity for everyone in the longer term. However, you can't really compare the two sides of the equation, of lower prices and lowered job prospects.

This is so obviously the case that it seems strange to point it out, but I have found that it is a hard truth to convey to people who have not experienced anything other than affluence. So: If you already have enough to live on, saving some money on a purchase is a nice perk. But if you haven't reached that threshold, or if you had been there but lost your perch, then saving is not the equivalent of making; it instead becomes part of a day-to-day calculus of just getting by. You can never save enough to get ahead if you don't have adequate career prospects.