A 3% increase in speed is a miniscule improvement. Emacs has a small dedicated group of maintainers, increasing the maintenance burden will stop other developem

A 3% increase in speed is a miniscule improvement. Emacs has a small dedicated group of maintainers, increasing the maintenance burden will stop other developements (such as the recent addition of async which is a much bigger performance issue). If emacs is losing users I would guess it is because to make it an IDE takes more configuration, and has more issues than competing products.