Who would you say are the most forceful and influential companies in consumer technology?

I work in the technology industry, and earlier today, while me and this colleague had nothing better to do, I was, out of the blue, posed this question: Who, in the consumer-facing technology industry (software and hardware), is are the 5 most forceful and influential companies? It took me some time to evaluate the question and come up with an answer, as I'd never thought directly about this topic, so I thought I'd ask around.

Personally, I'd say it was Amazon, Apple, Google Microsoft and Samsung. Who are your five?