> Are there really so many users who rely on 100% RHEL compatibility, and support for 10 years of the same ancient kernel?
It's not unimaginable. Think systems which have been certified by some regulatory body.
So, most of finance and banking, some of health, all of munitions and arms, many aviation systems, many industrial systems, etc.
I worked in EMV and munitions, and a lot of the time it was simply cheaper to continue making the old system than it was to certify a whole new system.
The fastest certification process I knew off took about 6 month. The longest took about 2 years.
At those timescales it becomes expensive.
It's not unimaginable. Think systems which have been certified by some regulatory body.
So, most of finance and banking, some of health, all of munitions and arms, many aviation systems, many industrial systems, etc.
I worked in EMV and munitions, and a lot of the time it was simply cheaper to continue making the old system than it was to certify a whole new system.
The fastest certification process I knew off took about 6 month. The longest took about 2 years.
At those timescales it becomes expensive.