One of Systrom’s closest friends, the venture capitalist Joshua Kushner, was able to get his firm, Thrive Capital, invested in the latest funding round. Like everyone else, Kushner doubled his money in record time and made a name for himself in the process. So Kushner asked his sister-in-law, Ivanka Trump, to make sure the employees enjoyed themselves. Everyone got to stay in suites in the gold-windowed Trump International Hotel, where they received little personal notes from the heiress, congratulating them.