Assuming you're not talking about this article's 7.68TB drive and not the mentioned 61.44TB one, actually far less than you'd think.
Solidigm's equivalent (https://www.solidigm.com/products/data-center/d7/ps1010.html) goes for between $1000 and $1500 USD for the same 7.68TB capacity: https://www.serversupply.com/SSD/NVMe/7.68TB/SOLIDIGM/SB5PH27X076T001_394195.htm
(And performs similarly, 14.5GB/s R / 10GB/s W, vs 14.6/11 for the one in the article).
They've missed a couple of times over the years.
From LTO 1 to 9, the capacities (TB) were 0.1, 0.2, 0.4, 0.8, 1.5, 2.5, 6, 12, 18. LTO 6 also rather let the side down there.
Apparently though LTO 10 is going to get things back on track? I've seen claims it will achieve 36TB, but I'll believe it when I see it.
The real problem is the environmental requirements for LTO 9 and newer have become too strict. The longevity is still (supposedly) fine, but the tapes are much more sensitive to temperature and humidity fluctuations when in use.
Brand new tapes have to be brought into the environment where they'll be written for 36-48 hours to acclimatise before being used, and then have a 60-90 minute "calibration" in the drive before they can be written to.
Honestly, it could put the use of the newer types of tapes entirely out of the reach of many.