Again, different markets, because I'm not going to do either of those things—if I'm ordering online amazon has better selection, and if I want to walk somewhere to pick something up I'm not going to wait for shipping.
taxi apps, delivery apps, social media apps—all of these require a market that's extremely expensive to build but is also extremely lucrative to exploit and difficult to unseat. You see this same model with big-box stores displacing local stores. The secret to making a lot of money under capitalism is to have a lot of money to begin with.
Taxi apps—uber & lyft. They moved into an area (often illegally); spent a shit-ton of money to displace local legal taxis, and then jacked up prices when the competition ceased to exist. Now I can't hail a taxi anymore if I don't have a phone.
> None of the big-box stores have created a monopoly.
They do in my region. Mom and pop shops are gone.
> Amazon unseated behemoth Walmart with a mere $300,000 startup capital.
We've been over this—they occupy different markets.
> Musk founded his empire with $28,000.
Sure. It would have been far easier to do with more capital.
I don't know of an instance of this happening successfully.