U.S. payment giants Visa and Mastercard are slamming the brakes on plans to forge new partnerships with crypto firms after a string of high-profile collapses shook faith in the industry, people familiar with the matter told Reuters. Both Visa and Mastercard have decided to push back the launch of certain products and services related to crypto until market conditions and the regulatory environment improve, said the people, who asked not to be named as talks were confidential. "Recent high-profile failures in the crypto sector are an important reminder that we have a long way to go before crypto becomes a part of mainstream payments and financial services," a spokesperson for Visa, the world's largest payment processor, said.