Industry attitudes have changed quite a bit over the past 15+ years I've been around it. Engineers from failed startups were actually pretty popular to hire after the initial dotcom bust, with the theory that they would recognize mistakes. I distinctly recall many clients preferring experience in a failed business for both devs and manager candidates.
Being at one job too long does often count against you, but primarily if (as is mentioned elsewhere here) you were in one role (one team, one tech, one product, etc.). EDIT: (Not condoning, just reporting it)
I had clients years ago that would only hire candidates who had been at their current job for over 5 years. That attitude has changed substantially, and movement is accepted in the industry so long as the movement is 'positive'. You can have several employers and not be a job hopper.
Being at one job too long does often count against you, but primarily if (as is mentioned elsewhere here) you were in one role (one team, one tech, one product, etc.). EDIT: (Not condoning, just reporting it)
I had clients years ago that would only hire candidates who had been at their current job for over 5 years. That attitude has changed substantially, and movement is accepted in the industry so long as the movement is 'positive'. You can have several employers and not be a job hopper.