TfL can barely build some flats in Zone 2 without the locals rioting like they're destroying a Cotswolds village. Actually, it can barely fix the literal busiest station in the country without a bunch of minor celebrity detractors riling up everyone about how much of a travesty it is that we're doing it.

Without the public or central government support, the efforts you're talking about amount to very little.

> Actually, it can barely fix the literal busiest station in the country

Liverpool Street isn't managed by TfL, it's managed by Network Rail.