If we're bringing in time machines, I'd make sure IBM rather than Gateway gets the spoils after Escom.. then twist whatever arms I need to, to have the amiga OS released as open source as soon as damn possible, and lean back and see what the world can come up with
Sod that, I'm going back to the pet era and making sure the Commodore 8-bit machines are all compatible and expandable like an apple ][, that MOS tech develops the 6502 up to present day, and that the amiga is properly developed and marketed. No stupid crap like the C64gs, cdtv, cd32, or A600 neither. MOS Tech would develop 68k processors...
Im aiming to have the computer industry split between Apple macintosh, Apple ][, NeXT, C64 successors, Acorn risc and Amiga. William Gates was mysteriously found dead in an alley after a deal to write altair basic went badly wrong.
Assuming that commodore's fate is unavoidable, escom would be the priority.
Now all I need is a 1980s irish sports car.