Apple ][ was the school computer and the upper middle class computer. Commodore, Atari, Sinclair, Radio Shack and TI (when the TI-99/4A went on sale) were the computers that introduce computing to a whole generation of families without the income to afford Apple. Its telling that both Atari and Commodore sold more computers than Apple for a lot of years.
Its a shame that both Commodore and Atari forgot what their niche was.