Everything Amazon does has an impact and by leading a US$575 million ($885.2m) funding round for the British food delivery company Deliveroo, it hurt shares in the latter's rivals.

The deal gives Amazon a stake in both delivery and preparation through "dark kitchens" in which some Deliveroo meals are made.

It is an arresting move — who knew that a company that started by selling books online would end up as the part owner of kitchens? — but it is characteristic of Amazon's roaming instinct.


It has moved from online retailing to running warehouses, publishing books, and making films