Like most companies it's a question of who you perceive your customers to be:

Apple — end users

Google — advertisers

Microsoft — OEMs, IT departments (although they seem to be changing their mind about OEMs)

Amazon — investors (which bizarrely works to customer benefit, or at least low prices, right now)

That's cute, but also pretty clear that every category you've assigned here is inaccurate in any realistic sense.