This is the cost of complacency. They were ahead for so long then the likes of Roborock just left them in the dirt. I remember the first time I tried one of the Roborock devices, and until then I have been a long time Roomba user (like, 20 years). I just couldn’t believe how much better it was. And iRobot just stubbornly refused to iterate on their fundamental products.
Wow I found Rohorock a bit sucky so god knows how bad a Roomba is. My theory is to make a decent robot vacuum that can compete with a human and a $50 vacuum and a cheap mop... you would need a 5k price point.
When I was looking at getting one, the iRobot one took hours / days to map out a house and it needed the lights on to do that. The Roborock model could do this in 15 to 30 minutes, and it could do it in the dark because it used LiDAR instead of a camera.
That was several years ago now, and iRobot _just_ added LiDAR to their latest models.