They stopped making them in the 90s and early 2000s when they quit making calculators. They made the absolute best RPN calculators that have ever been made, but shut down their calculator division. I prefer RPN, but I guess TI has a stranglehold on the market selling calculators without innovation for years and years. Ah well.
HP makes calculators still, actually. Can’t say I have any love for their printers but the HP Prime blows any TI equivalent out of the water, easily the best calculator I’ve ever used.
FYI HP also stopped making those. You can still buy HP calculators, but they happen to be licensed to third parties who carry on with new products of their own design under the same brand. At least in the case of the prime, Moravia managed to pull out a new firmware update since the transition, so there’s that.
From what I remember it was when Carly Fiorina took the helm as CEO that the company turned from Quality-Driven to Marketing-Driven.
After she left it just kept being managed in 90s’ MBA style, just like a lot of companies of the time many of which eventually went bust or massivelly shrank (GE is a great example).