Canada, Australia, NZ all progressed from Colonies to Self Governing Dominions due to the investment made in them, both human and capital. How was this not a benefit?
Canada, Australia, NZ were all white settler colonies. They were never treated in the same way as India, Malaya, Hong Kong, Kenya etc. You are once again agreeing with my point that Europe would benefit but the non-white parts of the world would not.
Your graphs show that most British investment was going to the white settler colonies, apart from India. Almost nothing was invested in Hong Kong or the Straits Settlements. This is precisely why I find it rather galling for you to insinuate that we would have somehow been better off under British rule when they contributed so little to our development. Instead of being a first world country, Singapore would have remained as a colonial backwater and someone like myself would have been treated as a second class citizen in his own home while living in a slum. How was this possibly a benefit?