I’m not really sure how you’ve ended up classifying TfL as a “low-ambition, low-performance” org. As transit agencies go TfL is one of the best on the planet, they’re constantly innovating and pushing the envelope of what’s possible. Every time they build a new line, or order new rolling stock, they use it as an opportunity to invent something new (which doesn’t always succeed). Everything from automated trains, to more complex and capable signaling systems, improved cooling and better customer signage.
A “low-ambition, low-performance” transit organisation doesn’t run train services with a train every 90 seconds at peak, transporting 4 million people per day without a major incident or loss of life. There are nine Underground stations with annual passenger counts larger than the entire BART system in the larger Bay Area.
The Underground system alone (only part of TfL responsibility) is the world fifth largest metro system outside of china by ridership.
TfL built its own ticketing system, and invented the entire idea of using contactless bank cards for ticketing, including negotiating with Visa and Mastercard to create brand new rules for transit agencies. A system that it now sells to other mayor transit systems, such as the New York Subway.
TfL isn’t without faults and problems, like any large public organisation. But to dismiss it as “low-ambition, low-performance” is to ignore many decades of safety operating the worlds oldest metro system, and developing and exporting new ways of improving transit for the travelling public.