If that means that RedisLabs stays in business and Redis stays maintained (which is not otherwise guaranteed), it means that the general public still benefits from it.
Who says that antirez can be hired "that cheaply"? Assuming he also owns equity of RedisLabs, anything short of a good exit might not be worth the oportunity cost for him.
Of course that is baseless speculation, but so is assuming that Redis could be continued to be maintained "by just hiring antirez".
