1) Cheating on taxes is quite literally stealing from every other person in the country. That being said I think there is a lot of small scale cheating going, especially for small cash-driven businesses.
2) There's no hostility towards entrepreneurs as far as I've seen it, quite the opposite. However people in general do seem to realize that there is a very real tradeoff between business interests and the interests of citizens. You can't have 0% corporate tax and free healthcare and education.
As for Uber Pop, the drivers are not volunteers and are simply either taxed for the profits they make through Uber Pop or they can do actual not-for-profit car pooling.