The largest venture capital funds are eating more LP capital than ever before, leaving some smaller firms scrambling for cash. But rising venture concentration isn’t stressing our panel of investors, as @mikeeisenberg @mikejgr and @ldcovert think that there is still room in the startup investing game for craft. In a packed venture roundtable, the investors went long with @alex to chat consensus investing, breakout startups, AI gross margins, the power crunch, supply chains, and even the…