Definitely any company that could afford a (then) AS/400 wouldn't look kindly on using it for gaming.
That being said, some did, otherwise these little games wouldn't exist. At one of my previous jobs, the end of the year was boring, no clients and projects would be on hold until January. One of those years I wasted a week making a crude reversi game complete with CPU player, and it was well received among the other programmers.
We tried to make a checkers game, but turns out a checkers CPU player is a lot harder than reversi for business programmers.
That being said, some did, otherwise these little games wouldn't exist. At one of my previous jobs, the end of the year was boring, no clients and projects would be on hold until January. One of those years I wasted a week making a crude reversi game complete with CPU player, and it was well received among the other programmers.
We tried to make a checkers game, but turns out a checkers CPU player is a lot harder than reversi for business programmers.