Pure Storage’s low-key cofounder John Colgrove joins the three-comma club after signing a flashy deal with Meta amid increasing data storage demand. John Colgrove—who still goes by his childhood nickname of Coz—dials in to a Zoom call from a hotel room in Vienna where he’s taking a brief respite ahead of meeting with Pure Storage’s European clients and speaking at conferences across London, Amsterdam, Paris and Munich. Despite being in vacation mode, the cofounder and “chief visionary officer” o...