Being a venture capital partner is supposed to be a job for life. But in 2024, dozens of investors at some of the most storied firms have quit or been pushed out, the effect of a protracted startup downturn and a broader shift in the role of VC firms.In the last month alone, Matt Miller said he was leaving Sequoia Capital after more than a decadeBloomberg Terminal; Lux Capital general partner Bilal Zuberi started work on a new fundBloomberg Terminal; and general partner Sriram Krishnan left Andr...