I've not heard of Sony doing this in the "professional" market, e.g. while AIT/SAIT has been abandoned, Amazon indicates you can still buy tape cartridges. But, yeah, if you went with them right now you're wishing you went with LTO, or have already switched or started.

On the other hand, https://news.ycombinator.com/item?id=7372595 indicates Panasonic is not trustworthy in this area.

Maybe give this 5-10 years and see if has staying power, adoption by others, etc. The LTO ecosystem shows this sort of thing can be done.