Yes, governments make provisions for different classes of people all the time. In this case, the Supreme Court has already said that these classes of people—people with terminal illnesses and people who don't have terminal illnesses who qualify—are entitled to this right. The constitutional floor has been set. It's no longer open for Parliament or government to pull people out. It just isn't open to them.
On May 5th, 2016. See this statement in context.