Fair enough. I should have said "there are ideas which are useful heuristics in Go, but not in real life", rather than talking about "sound reasoning".

The "I'm committed now" one can be a genuinely useful heuristic in Go (though it's better if you're using it in the form "if I do this I will be committed", rather than "oh dear, I've just noticed I'm committed"). "Spent so much effort" is in the sense of "given away so much", rather than "taken so many moves trying".