Why aren't lot more small and mid size companies buying bitcoin as their treasury asset.

Michael Saylor has made a very clear case for why businesses should put bitcoin on their balance sheet, its quite obvious to me (a simpleton). I understand Apple or Microsoft buying $1B in BTC would not affect their market cap much, however the smaller ones with 10s of millions in free cash flow should definitely be saving in BTC, but vast majority are not. I am aware of Semler and few other doing it but their isn't a Tsunami of capital from small or mid size businesses going into Bitcoin. Is it just the resistance of investors (like voting against btc investment from Microsoft) or laziness of CFOs etc.