Finally, large companies began to pay attention to cryptocurrency. Every year more and more companies start to implement cryptocurrency into their payment system, now you can even buy goods in some stores for cryptocurrency. This means only one thing - cryptocurrency is gradually becoming a popular means of payment.
Those big corporations that have been buying huge amounts of bitcoin are not the same ones that are accepting bitcoin for their goods and services--those are two completely separate things, I think, even if both are very bullish for bitcoin in general.
How can a company holding 500k + bitcoin?
That amount of bitcoin could be held in multiple wallets, you know--and in fact if a company (or an individual whale) had that amount, it would be a smart thing to do not to hold it all in one wallet. Having said that I don't know if any company actually does own that much. I'm thinking that might not be a very smart thing to do, because 500k+ would be extremely hard to sell without crashing the entire market if it came to that, not to mention the huge risk they'd be taking by owning such a high percentage of outstanding bitcoin.