Most likely the US will increase its advantage overall during this time, as China's Government puts itself into a straight-jacket along with its most talented people. As opposed to unleashing them in Deng-style with further liberalization.
China can never have a full answer in terms of exports vs the US software juggernaut. That's inherent to their system of extreme government controls and limitations. Why would anybody in the West ever use Baidu, Ctrip, or Chinese equivalents of Salesforce, Workday, ServiceNow, Slack, DocuSign, Fortinet, Github, GitLab, Splunk, Twilio, CrowdStrike, Palo Alto Networks, et al? There are dozens of booming enterprise companies in the US in that mold, China inherently can't compete with most of them globally. That also goes for the burgeoning software companies in the 'West' outside of the US, such as Atlassian and Shopify (both with $30b market caps). There is a reason why AWS is globally dominant, while China's cloud providers are lagging by five years or more (both in service offerings and sales size) - businesses in the West mostly won't go anywhere near China's cloud services and never will. It's another case of their companies being firewalled inside of China.
To the parent's point re allies, Trump is a mess, however he is gone after one or two terms. US allies generally understand this is a speed bump in a very long-term relationship. Xi's authoritarianism is practically guaranteed to increase by the year for a long time to come. It's going to get worse. Dictatorships become more aggressive and paranoid with time, rather than less.