Do we need effective rent controls in Dublin?

Let's not forget this important fact: over half the homes available for rent in Dublin are on Airbnb. This should simply be not allowed.

I believe Berlin banned whole homes being rented on Airbnb (rooms only were allowed).

I know this wouldn't solve everything, but it WOULD make a difference.

Reference here, please read: https://www.google.ie/amp/s/www.irishtimes.com/business/economy/one-of-every-two-dublin-rentals-now-only-for-tourists-daft-ie-study-claims-1.3496502%3fmode=amp

Currently, all LL's have to accept HAP. It's illegal to say no. There is little to no actual social housing; it's all private LL's. If you eliminated the "large stock of social and community housing", how would Vienna be, I wonder? (seriously asking)

I gladly answer that for you: The available stock of social and community housing is super low there and people who need and can avail of it wait forever. There are a lot of black sheep living in these apartments (it's almost completely apartments) and the way it works is super complex and has a lot to do with who you actually know. There's a building boom over there going on at the moment where a lot of new luxury rental property is thrown on the market out of reach for most people. The big stock that's there is full and if you need something affordable you'll look long, they have other housing problems. The one thing that's a difference though is that there's a support payment that everyone can avail of if they have low income and the rent per square meter is below a certain threshold, the payment goes to the tenant and they pay the LL. Now it's not as high as HAP but it's definitely a big help.
The actual market over there is in a state because Austria is still working through the huge influx of refugees that they got 3 years ago and this brought certain socio-economic problems. It's not easy finding affordable accommodation there either. If I go in-depth now I'll spend the next 3 hours typing though, so I hope it helps to understand a bit.
But Vienna isn't a kip full of junkies and the police is actually enforcing misdemeanor, so it's a pretty nice and safe place to be. Plus all the culture. And the food.

Edit: rental caps are within the inflation. You can't raise the rent more than inflation, if there's a deflation, rent usually goes down. If your tenant moves out you can raise the rent a bit more unless they get someone to take over the contract, popular method with unlimited contracts. But LLs find their ways around it, new developments now have ridiculously high "parking lot rents" where they charge you some prime location rate in the outer districts or "kitchen rents". Apartments come unfurnished but kitchen is usually in already.