Google set out to catalog the entire internet on day one. If that's not a grand vision that they spent billions on, what is?
AirBNB set out to disrupt the entire vacation rental market.
Stripe set out to disrupt the entire POS payment market.
Apple is the only one who fits your narrative: they set out to make a hobby PC then Jobs wanted to ... oh right, disrupt the entire PC market with Mac, but that came 7 years later so OK.