'''Keyboard Service Program for MacBook, MacBook Air, and MacBook Pro'''
Notably, even the new 13- and 15-inch 2019 MacBook Pro models are eligible for the Keyboard Service Program, hinting that the new material used in the revised keyboards may not offer a true fix. The program offers repair and replacement of faulty keyboards for four years after purchase.May 21, 2019
This should be covered by Apples
'''Keyboard Service Program for MacBook, MacBook Air, and MacBook Pro'''
Notably, even the new 13- and 15-inch 2019 MacBook Pro models are eligible for the Keyboard Service Program, hinting that the new material used in the revised keyboards may not offer a true fix. The program offers repair and replacement of faulty keyboards for four years after purchase.May 21, 2019
https://support.apple.com/keyboard-service-program-for-mac-notebooks