Please see my other comments. But building on the idea, that because Germany/Berlin being a tenant place there are no gains to lock in - that logic would then

Please see my other comments. But building on the idea, that because Germany/Berlin being a tenant place there are no gains to lock in - that logic would then conclude that there can't be gentrification at all. Which is of course nonsensical. Gentrificators don't need to be property owners, in fact gentrification theory explicitly states the opposite: that it's usually new tenants that change poor/working-class neighborhoods and spark the gentrification process. Those tenants are so called "pioneers", usually high educated, creative class, affluent and thus able to buy property even after the gentrification process has started.