Mentioned here already, I think.
But the computer world has been using all sorts of different tape formats since for-ever, and I don't think any of them made it into domestic use. Perhaps because both cartridges and machines cost a ridiculous amount of money.
The closest I ever saw was the tape cartridge that looked exactly like the DV camera cartridges. I always suspected they were the same, but, of course, the suppliers used to say, "Oh no, you have to buy the special data tapes."