> I doubt any company is seriously investing in a worker who would likely be gone the next year.

There is a mismatch between how you would expect industry to work and what my last 30 years has taught me.

> With 35 companies, that would be around 1-2 years per company on average if you are retired or near retirement.

I have been at 4 companies for around 2 years or more. The rest of the positions were either contract or startup or contract-to-hire. The vast majority of engineers seem to settle in and suffer at terrible companies, rather than make moves to better jobs. They also tend to settle at whatever they are assigned and grow their skillsets by their employer's needs, rather than on their own.

Over the last 2 decades, if you stayed somewhere for over 2 years, you better have added concrete skills to your resume and have increased your compensation by over 10%. If that's not on track, look for another job, imo.

Contract-to-hire has been very popular. ie JPMC, credit, medical, adtech, games, big retail, subcontractor shops, to startups (4 of which were acquired). All initiatives to progress the careers of developers is applied more or less company wide because the line between contract-to-hire and fulltime is considered an engineering issue if there is more than hub. If you are a sole contributor, on some satellite project or still considered in training, you might not participate due to scheduling that had already been arranged, but the idea that contractors are excluded is more a possibility than a certainty. Most of the initiatives are little more than maybe someone talking with you every quarter, anyway.

> Getting lip service seems already good deal at that point.

It's strange that people are assuming engineers are treated special because of a resume that nobody looks at after an offer is made - having conducted hundreds of interviews. This must be a very rare thing some people may do.

I mean the comment says "contract" right there; you can easily be on a contract with multiple companies simultaneously. When I was freelancing full-time ca. 2010-2013 or so I often had 5-6 active contracts running simultaneously. I probably worked for 15-20 different companies total in that 3-4 year span.