I think if we could go back in time, prevent all the mistakes and create the perfect Goldilocks scenario, Atari computers still would have been obliterated by PC clones. People wanted at home what they used at work. The market for MS-DOS software was enormous.
And I've always wondered if the Warner Atari really made money on the 400/800/1200/XL, or if financially, they would have been better off sticking to games.