How do you handle client objections to increasing reviews?

[zach.glover]

With the importance of reviews for rankings both on LSA and for GBP's (and it seems like they're getting more and more important each day), we push to our clients consistently how important reviews are. We've started to get push back of "If reviews are so important, I can get those myself. Why am I paying you?". Obviously, there's a lot more to SEO, GBP, and LSA optimizations, but just curious how others navigate that?