Fertility rates are low and people are ageing, like everywhere in Europe. There will be a moment that simply there won't be enough workers. The reality is that there is already a lack of healthcare professional even without a population cap that would only get worse given the case.
Sounds like modern slavery, import people from poorer countries to tend to the rich and elderly in countries that made short-term sacrifices to not build a future for themselves independently.
Import people from poorer countries with a salary of 100k CHF and wonderful life conditions. Anyway, what I mean is that it's nor worth it for Switzerland, in my opinion, to break the agreements with the EU to limit the population artificially to a random number.
