A Ford bought today is less expensive, considerably safer, more efficient, and more reliable than a Ford from the days of Henry Ford.

Meanwhile, today's manufacturing companies routinely make objects – like the processor driving the machine that you are reading this on – that are orders of magnitude more complex than the most advanced technology of 1959.

And all of this was done by companies that employ lots of accountants. I'm not sure why you think that accountants and engineers don't routinely coexist, or that Henry Ford didn't employ plenty of accountants back in his day. Being able to manufacture good stuff in bulk at reasonable prices is a major exercise in accounting, and always has been.