Comment: I have the following observations:
1.  Doctors, the subject of the article, have little risk of going out of business.
2.  If the family members are  running the business they will not be affected by the "income sprinkling" measures.  Those measures are only targeted at family members, like adult children who are attending university away from home, who receive income from the corporation and do not contribute to the business.
3. How can you argue that high income incorporated professionals, who get to reduce their taxes by allocating their income among family members and then have the whatever is left taxed at low small business rates, are paying their fair share?  Compare them to  the average person who is making a fraction of the income of the professional yet has their much smaller income taxed at the regular full marginal tax rates.
3.  Attacking the government officials who came up with these measures is  spurious.