Here in the USA and other First World nations (Japan, most of Free Europe at the time before the fall of the Berlin Wall), are up to date with programming and systems. Its the Second World nations (like the USSR, China, India, etc) who lag behind the technology and rely on hand-me-down systems that has the most of the problems. Nothing like seeing a VAX or a PDP11 from the 1960s being use as a missile launcher. Much of the time the systems were down for maintenance and parts replacements/repairs.
Funny - the USSR had their own Microcomputer, forgot its name (and I had one!), which was a PDP-11 inside something the size of a Commodore Vic20 case. It used cartridges and saved things to cassette. Though it was a very viable and powerful system for its size and time, it did not sell well. Their Apple II Clone did better in sales, and(!!) that is on top of the licensing and government registrations/regulations fees they had! (You needed a license and register a typewriter and tape recorders in the USSR at the time! The reason is because they can be used a propaganda making machines!)