ARM wouldn't be relevant at all without the Internet. In practical terms its product is entirely linked to the Internet, specifically the mobile Internet.
ARM is not a website, sure, nor an app. It's as much an Internet company as AWS is. One could pretend AWS could exist in some formulation without the Internet, but that would be silly. The same is true with ARM as it exists today, the Internet made them what they are. If you remove the Internet, which neuters smartphones, ARM all but vanishes; thus, they're plainly an Internet company. You don't have to be strictly software to be an Internet company.
This article is talking about 'internet-vision'... I don't see how ARM fits into that vision, especially since it effectively predates it. Plus it's now been sold to Softbank at any rate.
ARM was founded by two American companies and a British company, Acorn Computers.[0]
ARM Holdings (to be fair they did spend 99% of their life up to this point in the EU) and SAP are two reasonable examples derived from the EU that have products that are used by Americans regularly. ARM was co-founded by two American companies and is now owned by a Japanese company, so that's not exactly a shining independent example for the EU (past or present).