This is true, and in addition, it's a very unequal crime. To properly evade taxes and get away with it, you need professional help. Most standard W-2 employees can't afford it, i.e., for most, the cost to hire professional help evading taxes is larger than the taxes they could save.
However, if you're very wealthy, then the calculus changes: saving 20% taxes on $50M/yr income is a lot more attractive than saving 20% on $200k/yr income. Effectively, the wealthier you are, the easier it is to evade taxes, further exacerbating at least the perception (and quite likely the reality) of inequality.