But if you morgage the house and use that money to buy bitcoin and hold in own custody that sounds possile, or are there more hidden tricks they play?
Discussion
One should check in individual case, what is better. I guess, that because the mortgage is available for both someone who already has enough money to buy and the one who doesn't, it is in general less efficient for the first group of people. Banks have to exploit the second group of people somehow, so conditions should be worse in general. But everyone should check themselves, because it may vary from country to country and from person to person :)
The landlord might surprise us and tell us to move out in which case we will have to find a new place but all the rental prices have gone up. Buying a smals house just might make sense. But it feels more tempting to get bitcoin before the halvening.
You can also wait for halving in a cheap country, e.g. in Thailand.