Re: A shorter term problem
The problem is that legal if amoral accounting makes the entire discussion a nonsense. Amazons declared profits for this year were $200 million, though they announced a $13 billion purchase of another company.
I do beleive that the pre tax dodge profitibility was much more than that, and that buying other companies means that the money spend is written off as an operating expense and therefore as it's not profit it's not taxed. (And pity poor old broke Amazon, who is so really deeply broke and that they can't afford to pay their
staff entirely independant contractors the minimum wage or other workers rights such as holiday pay, a pension, protection from unfair dismissal etc)