If you develop software chances are that eventually your state of the art technology stack will fall behind...something that once was great stuff becomes old and outdated.
Using always cutting edge technology is simply impossible in a bigger company and bigger projects...as with every technology stack update you introduce regression...and since the customers have no direct benefit from this...eventually the company will cut the effort for staying up to date.
Something that works should not be changed unless there is a good reason for it.
And so we end up using Ant+Ivy and CVS and Java 8 in 2019...where everyone is using Maven and Gradle and Git and Java 11...and you have to argue constantly why...
Upgrading the technology stack of a department is not that simple...we have to move slowly and cautiously...and we will get there...and products will not suffer.
..and everyone will be happy...except those who will not.