What could possibly go wrong??
For homes purchased after January 1st, you can still get a license to temporary rent out the home. But you'll need to have lived in the home yourself for at least 1 year. Temporary rentals can be done for 2 years at the moment, and extended once more, I assume the same would apply under the new law. So the 2-3 years could be covered.
Existing ownership isn't affected, as far as I know. This only would apply to new transactions.
We also need to acknowledge that cities inevitably increase in density, which necessarily means apartments, etc. Protecting single-family residences near city centers is a subsidy to them that we should not pay any longer.
And the "tragedy of the commons" is essentially a red-Herring fallacy. It is perhaps valid at the most in a free-for-all rather than a commons. Where you have a commons, you have relations between the users of the common resources, and social structures for decision making about sharing and use, which prevent depletion of resources.
See also:
https://theanarchistlibrary.org/library/the-anarchist-faq-ed...
So private companies are allowed to engage in rent-seeking behavior but individuals aren't?
What is the 'would need' referring to, your ideal situation, current law, or proposed law? If it's any of the last two, I don't think you're correct but I'd be happy to read any references you may have to substantiate this.
Other houses are meant to be for purchase, and purchase only. If you purchase a house like this and then rent it out, that should be considered breaking the intended designation.
So if you as an individual want to own multiple houses to rent out, you need to find houses with that designation and that are for sale. Alternatively, you need to find ground with the "rental housing"-designation and build a house or multiple houses on there.
You can do this in a collective of individuals, too.
And people who currently own multiple houses that were not meant to be rented out (but are rented out to other people) would need, by law, to either sell those properties (the current renter should get the first option on the house's current market value price).
And honestly, I feel that the people renting houses that were never meant for rental should get a discount. And that discount should come out of the pockets of the government.
And yes, I'm a Dutch citizen. I know that means my tax money is going to help these people buy their houses a little cheaper at my expense. I'm fine with that as it would create a healthier housing market for everyone. That's exactly what my tax money is for.