Silicon Valley's 33,000-company startup scene is highly competitive. Arvind Gupta is the founder of a fast-growing biotech incubator called IndieBio that funded meat alternative startup Memphis Meats, which is now backed by Bill Gates and Richard Branson. Gupta says most VCs are missing out on the biggest windows of opportunity because of a myopic focus on drug development. Drugs are sexy. Climate change? Not so much.