Literal decades ago I bought Sennheiser headphones. They were great. They later orders of magnitude longer than anything I had before. They fit well, and were foldable, making them very compact when not used. And they were cheap too.
When they finally broke down I naturally wanted Sennheiser again, but they referred me to their new brand Epos. I bought a headset this time, not just headphones. It was a lot more expensive, and I was terribly disappointed by the ergonomics. It’s also rather big, making it unwieldy when not in use. And they broke already, though I was able to fix it - they broke just out of warranty of course.
Of course this is just one anecdote, but it really does feel like another great brand sold out and became crap.