Off the top of my head, I would count Google, Google Translate, Google Maps, Netflix, OpenAI, Uber, PayPal, Amazon, and SpaceX in the category of outsiders creating a massively influential product.
You are free to pick apart the companies and their origins to decide if they are enough of an outsider for you.
Uber specifically needs to be removed from that list. The business model is 'drain investor money to undercut existing business and then abuse contractors and employment laws to attempt to make a profit after'. There isn't much innovation anymore, most cab companies have similar apps and experiences now.
You are free to pick apart the companies and their origins to decide if they are enough of an outsider for you.