I hope the guy above you who was sitting on his balcony having a beer
His concrete balcony was fine, it was all of the plaster board and metal supports that collapsed. But on a 10m balcony that is quite a crash.
Even if you rent the low build quality can be an issue. I live in an eight floor ten year old condo in jomtien. This year my balcony ceiling collapsed.
Although the landlord rebuilt I am moving because I fear the remaining condo ceilings. When I open doors with the air con running I can hear the bedroom ceiling flex.