Frankly, despite being a pastor of the PROPERTISM religion and an ardent fan of MICKEYMOUSATION, I still don't quite understand the economics of this whole en bloc game.
Firstly, the old condos which have "so much space and greenery" are worth only $X psf (where X depends on location).
Secondly, if these old condos are enblocked then usually each unit can be sold for $1.5X psf (assuming average en bloc premium of 50%).
Thirdly, the developer needs to price in the cost to rebuild and earn a profit thus adding an additional $0.5X psf, resulting in the new condos being sold at $2X psf.
Hence the people who buy the new condos pay $2X psf to "live in condos where the rooms are shoe boxes and the blocks look into one another".
Yet they are only willing to pay $X psf for "so much space and greenery".
Anyone who needs a new-looking condo could actually just renovate the whole unit which would cost at most $0.2X (where X depends on location).
Then they will have a new condo with "so much space and greenery" and half the number of neighbours at $1.2X psf, but they prefer to pay $2X psf to "live in condos where the rooms are shoe boxes and the blocks look into one another".