Stripe on Wednesday told investors that January 1st marked the "beginning of the singularity," which it refers to as a major inflection point in longterm trends, according to a letter obtained by Axios.Why it matters: The payments giant believes that being privately held is the best structure for such a consequential moment, which suggests that any IPO remains on indefinite hold.By the numbers: The company said that first-half revenue rose 41% year-over-year and that free cashflow rose 43%.Strip...