Hong Kong (CNN Business)Chinese ride-hailing giant Didi wants to bail on Wall Street . It may soon have plenty of company. For China’s big tech firms, the appeal of going public in New York was once obvious: They gained access to a much deeper pool of capital, higher valuations and more relaxed listing rules. But that is quickly fading as they’re forced to navigate a slew of audit rules and sanctions from Washington, coupled with Beijing’s heightened scrutiny on data collection and foreign listings .The pressure from both nations has created a “perfect storm” of problems for these companies, according...