You're kidding yourself. Those people you know who are switching are having no material effect whatsoever:
If anything, their market share is going up.
Apple is all in on privacy ...Apple is as big or bigger then Google and makes it's money off of hardware & software not invasive/intrusive ads. Those who ride their same wave will no doubt see huge and or continued success!
Check back on that counter in a few years! It will be a different story I guarantee you!