If you’ve been involved in investing or fundraising activities in the past, you’ve likely heard about “TAMs” (total addressable market), as in “So what’s your TAM look like?” The general idea is to determine a metric that communicates in few words the nature of a given market for a product or service. Investors want to know how a company thinks about its market opportunity (investors generally want large ones), and startup founders need to have a sense for what they can realistically target, build for, sell to, and capture to build a business. You may also...