Good point, how calculators differed from computers. Branding surely helped IBM establish the PC, but against Apple what mattered was its years-later entry to t

Good point, how calculators differed from computers. Branding surely helped IBM establish the PC, but against Apple what mattered was its years-later entry to the 16-bit world, with a relatively closed system, with high margins. Apple had a shot at 16-bit dominance but missed. (They came out with the Apple 3 and Lisa first.)