Seriously? That's clearly not what he said. This really isn't very difficult to understand...
Thanks Jumbo.
To clarify Hubman, corporations don't demolish buildings if there's no need to and I'm pretty sure whoever owns the Hilton building (whether it's the Hilton hotel or a property owner) has no incentive to demolish something that is generating revenue. Now, if the building had no tenant or if the tenant is planning to leave soon and they can't sign another tenant or they feel like they can hold off signing a tenant for 2 years to build a new tower, then the property owner may very well decide to demolish the building to build a larger building because it won't be losing revenue by doing so (ex. Traveler Insurance Building).
However, it is less likely that a high-rise will be demolished compared to a small building simply for the following reasons:
1) High-rises generate a lot more revenue than smaller buildings meaning there is a lot more revenue to lose when a structure is demolished.
2) Going off the point above, high-rises are subjected to greater loss the longer it takes to get the building constructed meaning the corporation redeveloping the building has to consider the risk a recession can doom their new tower (i.e. unable to secure financial loans for construction, losing tenants that signed the lease, construction materials goes up). They have to weigh this risk against acquiring another building or redeveloping an empty plot.
3) Replacing a high-rise with a taller building would undergo a more rigorous review in the city. You already see this with the Aquarium Tower.
In summation, corporations do not just demolish building whenever they want to. It's not a click and plop so to even suggest this idea is not reflective of reality.