Any aspiring entrepreneur hoping to get “Shark” Kevin O’Leary’s attention with a business pitch better be able to answer this question: What’s the next big thing for small business? Though O’Leary has recently invested in the crypto space and said he thinks it is “important,” if you think it’s bitcoin or blockchain, guess again. The “Shark Tank” co-host and host of CNBC’s “Money Court” says the Covid boom in direct-to-consumer sales is the key business shift and it is equally important to small companies and business giants. Speaking at CNBC’s Small Business Playbook event on Wednesday, O’Leary said rapid acceleration in direct-to-consumer (DTC) sales have shown up in “behemoth companies”…