I can't say I see tax evasion in this manner as morally wrong, although it's just a bit dubious. More to the point, though, it seems to make people hypocritical when they complain about the massive tax-dodging schemes rich people use. Apart from, obviously, the scale, what is the difference? None. But if we want to fix the large-scale problem, there will need to be an attitude shift from seeing tax as something to hate and avoid whenever possible, to seeing it as a civic duty that makes us feel genuinely a part of the community. I'm not going to hold my breath waiting for that one. For that matter I'm not even going to advocate that shift in attitude.
In the meantime, how tax is collected ought to tighten up.