Its not strictly just a matter of dollar signs. Old buildings, while built to last aren’t often built for performance either with energy or comfort. The cost to retrofit such buildings to current building regulations can be on a scale as to negate profitability, or only maintain profitability by passing on the cost to the customer/homeowner. This can be done by keeping the facade and rebuilding from the inside… but there is a cost to that.
I have to admit, I wasn’t familiar with the Adhesive Specialties building, and now that I’ve seen it I really do wish an effort had been made. Fine examples of art deco architecture are in short supply in London IMHO. I’m not quite so connected to Victorian, Georgian or Edwardian… not that I particularly dislike this archetype, its just there is already a proliferation of great examples in this city and across the Country.
I believe good Heritage planning is maintaining good examples… not securing all.