It was also ahead of available display bandwidth. 640x256 non-interlaced was not a display resolution suitable for a business machine, and it was shut-out of the business-use market for anyone who wanted to preserve their eye-function...
Of course, the Amiga was originally conceived as a gaming box, but the initial price and inept marketing scuppered chances of real success.
The ST's 640x400 flicker-free monochrome mode is what made it such a hit with businesses in Germany and Holland. Thanks to the exchange rate it was cheaper to buy an ST than a DEC VT52, and you got a powerful computer "for free"!
Of course, the Amiga was originally conceived as a gaming box, but the initial price and inept marketing scuppered chances of real success.