Let's acknowledge the fact that something Microsoft, Apple or Tesla does is not outright a good choice.
I am still expecting a large domino to launch in the mid-long term. However, the largest players in the pool are probably waiting for Tesla's investment outcome first. Since Bitcoin's drops were all very rough and we've been bullish for longer than ever before, why would a large corporation invest in it?
And then.. up to this date, Tesla's investment has gone wild on profits. Some competitors might be waiting for a significant BTC correction so that they could purchase much more BTC than Tesla afforded in order to compete with their profits.
Give it time. Don't expect all large corps in the world to get into BTC within a month. Not even 6. These news will come repeatedly over the next few years. Whether this is good or bad for BTC.. that's a quite debatable topic..
Also ESG and climate issues are in play now, especially as we come out of lockdown and with the Climate Conference in Scotland later this year.
Every week now I'm cashing in a little bit of Bitcoin as I get worried about this.