Billionaires Elon Musk and Jack Dorsey dismissed the so-called Web3 and criticized the involvement of venture capital firms such as Andreessen Horowitz in building out what some have called the next phase of the Internet. Web3, a vague term for a utopian version of the Internet that is decentralized, is based on digital record-keeping technology blockchain, which also drives the platforms running cryptocurrencies such as bitcoin and ether. Tesla Inc. Chief Executive Officer Musk on Tuesday wrote on Twitter: “Has anyone seen web3? I can’t find it.” To this, former Twitter Inc. top boss Dorsey replied, “It’s somewhere between a and z.” Dorsey did not elaborate on the post. Venture capital firms such as a16z, founded by Marc Andreessen and Ben Horowitz, have heavily backed blockchain, cryptocurrencies, and Web3. Andreessen Horowitz was not immediately available for comment. Web3 is meant to give users ownership stakes in platforms and applications, according …