I am wondering if there's a huge probability of bitcoin investing will become a company's focus. Like making a company that specializes investing of bitcoins
Any thoughts?

I think there are lot of the company has focused on bitcoin for their business even in specialization. Here are as samples:
1. Exchange company
2. Review and Rating company
3. Data gathered company such as coinmarketcap
4. Technical crypto knowledge and also certification such as Certore developing.
It will depend on the business instinct of the person to find the opportunities here in cryptospace.