A billionaire tech critic says he is mounting a bid to buy TikTok, the massive Chinese-owned social media app whose parent company faces US government pressure to sell.Frank McCourt, the executive chairman of a family real estate giant, McCourt Global, and founder of tech and innovation initiative Project Liberty, told Semafor in an interview Tuesday that he plans to buy and rebuild TikTok as “a new and better version of the internet where individuals are respected and they own and control their...