it is also immoral for the fortune 500 companies...
Just because it is immoral doesn't mean that it is illegal or against the law.
If large companies are avoiding taxes people think they are cheating. When someone has the ability through the way they setup their business or the country they have their business i, others without that possibility are sure they are cheating.
Accounting is not always an exact science, tweaking the uncertainties to your own advantage is about the limit of what is concerned legal, within limits!
Bitcoin is new, so in my opinion people should file as they were boy scouts to get maximum goodwill from authorities. That will be beneficiary in the long run.
Just because people think that something is wrong doesn't mean that it is illegal.
For example:
You may believe that abortion is right/wrong, but that has no bearing on what is legal/illegal.
I don't think that the state has any right to murder people, but states murder people all the time. Legally.
There is a very big difference between "legal/lawful" and "moral".