If the budget allows, buy the software. If not, welcome to FOSS. There is no alternative.
In fact, the problems with ubuntui have aunts are over 35 is not enough, it is extremely important personal relationship, but without them, and on Windows they you accou life to make can.
Raids will be conducted. MS is not in the business, you will be a nightmare of the Prosecutor's office. What will be, for sure, the only question is "when".
Periud of high-profile cases so if you have problems do not expect to become a star, rather you will have to wait for the usual court routine.
My advice — buy some realties of licenses for Linux, something like altlinuks. That would have been a document stating that you bought something. Before very good sold Infraresurs, but something information is no longer on their website.