I thought you meant since we were in the top flight - which is 40 years. Whatever - I agree it is a failure - a PARTICULAR failure given SLs wealth compared to other club owners.
Especially when you stop and think about which (similar size or arguably smaller) teams have tasted the Premiership whilst we have been languishing: Swindon, Oxford, Bradford, Huddersfield, Blackpool, QPR, Watford, Bournemouth, Charlton, Bolton, Palace, Cardiff, Swansea, Barnsley, Hull, Portsmouth, Brentford, Brighton.............
We have astonishingly underachieved and continue to do so.
However, I believe that most of the footballing world still view us as a small club - a footballing backwater, so whereas we fans think we have underachieved I don't think that sentiment is widely held outside BS3.
It wasn't that clear. I look at top flight football as pre and post 92. The top flight football we have is very different now to a degree comparison to pre 92 is very uneven..
Those smaller (?) teams. Bristol City have astonishingly failed and continue to do so. Blaming parachute payments ignores the decades of failure, when BCFC fail so consistently with sensible comparison to clubs of similar means and potential.