I think there's a tendency for people to overestimate the importance of foreign apps to Chinese consumers and to underestimate the Chinese market. It's almost laughable that people think blocking WhatsApp will make any difference to Chinese people.
eg., the Chinese tech/online market is so huge it can sustain multiple competitors of its own in each sector - ride-hailing, search, shopping, food delivery, maps, chat, mobile payments all have massive players providing their own competition and innovation.
Genuine ground-breaking technological innovation is rare. When it happens, it's not like China won't get it (eg. touchscreens) because it blocked Google. In a lot of ways, because Chinese consumers are so quick to adopt new technology, there's sometimes more low-level innovation/adaptation because companies can rely on new apps/tools getting traction quickly.