Not at all. I am not suggesting it is easy. I am just stating that politicians who on the whole aren't even interested collectively in changing the tax rules then grandstand babbling on about moral obligations.
Now whether it is because in reality those tax rules shouldn;t be changed but Joe Public wouldn't understand that is another matter but these are deflections.
Did Amazon or Starbucks (or Trump) break the law to avoid tax? Nope. Why? Because they abided by the rules. Why aren't the rules changed then? Because it would not actually result in more tax take / just mean they go somewhere else etc. etc. etc.
If the actual result would be that changing the rules would end up with a worse off situation then be honest about that. Don't start grandstanding harping on about moral obligations. Trump played by the rules. End of story.
And on that note. If we accept that is the reality does that render Corbyn's stance on this as "pie in the sky" thinking?
Is this all just the "window tax" reinvented?
That's a very nihilistic attitude, and one that is frequently used by the right to justify all manner of injustice. You appear to be saying that all human beings are greedy and selfish, and therefore it is pointless even trying to create a fairer, more equitable society. I say that's baloney - the majority of us are capable of aspiring to something better, and if that involves pressurising the rich and powerful into contributing to the society that enriches them, then a means can be found if the will exists.
Remember that Amazon and Starbucks have already been shamed into voluntarily increasing their tax contributions, albeit marginally. If enough people boycott the companies they consider - by standards of common decency - to be acting in an unacceptable manner, that will hit their bottom line, and they will react.