Re: C90 cassette, as that medium was the dominant way? No!
"The 8 track would have been useless for home computers."
Although that is exactly what Sinclair went on to do with their Sinclair QL computer - using same, but smaller tape looped cartridge as its data storage - Plagued with problem !
ICL even sold that computer as the 'One Per Desk' colloquially known as the 'One Per Bin' after a short while