I think the main reason is that consoles caught on late in Europe - while NA market was suffering a vg console crash, Europeans played happily their ZX Spectrums and C64s.
Then Sega launched Mega Drive in '90 in Europe and Nintendo SNES in '92....meanwhile, Europeans played their Amigas since '87 (sales of Amiga until '93):
Germany: 1.68M
Rest of Europe: 2.67M
USA: 1.24M
Rest of World: 1.6M
Mega Drive launched almost 2 years before SNES in Europe, and that defined what European console gamers were playing, and later Sony just inherited the audience and PCs took over ZX/C64/Amiga's place.







