The cost of the tapes isn't what keeps me from having it home. It's the cost of the tape drive.
But yes, forking over a 2 to 4k for a new LTO-7+ changer isn't a small investment for private use, for a company it's IMO a no-brainer though.
FWIW: You can get them often cheaper, e.g., at ebay or whatever your local online reseller space is. For example, one can get LTO-5 ones here for 300 - 400 bucks and LTO-6 for 600 to 800. While LTO-6 only has 2.5 TB of space you can also create tape-sets (e.g., spanning multiple tapes) and for the more important data it may even be enough.
No, that's not really a concern currently, and I actually never heard that in combination with LTO - which is relatively modern.