It's not that you can't find modern replacements for them, it's not wanting/needing to if you've got something that already works for you. Some of that crusty

It's not that you can't find modern replacements for them, it's not wanting/needing to if you've got something that already works for you. Some of that crusty stuff from the 1990's and earlier works just fine and the 'modern' replacements bring nothing new to to table for many use cases. So why bother upgrading to a version that phones home and/or is tied to a subscription to accomplish performing the same task in a less streamlined way? Do I do this with most of my software? Absolutely not... generally, but not always, the newer stuff does the job better for me. You wanted an example, so I'll provide one: I have an ancient version of MathCAD (from 1994 or so) that I still fire up once or twice a year for some computer algebra tasks. Could I upgrade or switch to another application? Sure, but why bother when what I have does the job? (I've even got a 'modern' version of Mathematica but prefer the MathCAD UI from the 1990s... ah, progress!)