Re: This is really very easy
As for investing sufficient to avoid tax, I've done that myself for quite a few years.
Lots of do that, but there is more than a difference in scale for companies like Amazon doing this because their effective cost of capital is so low. This, as much as anything else, is what gives them a competitive advantage in any particular area.
Futhermore, Amazon's strategy benefits certain types of investors only by favouring share price increases over dividends, a point that was made by someone else on this forum years ago. This is why Amazon actively cross-finances, or subsidises the low-margin warehousing and logistics business with profits from AWS. It's all more or less legal, but it's disingenuous to pretend that any company can do it.