If I'm honest, RT wasn't the reason I got a 2070S over a 5700XT at the time I was picking between the 2. While I agree that it might be a reason, said reason is usually confined to the higher-end cards like the 3080, where their rasterization performance is already more than powerful enough to offset the performance loss induced by running ray-tracing calculations (mitigated by the RT cores).
There are plenty of other reasons why people would choose the Team Green option over Team Red, and that does not include brand-loyalty;
NVENC - I know everyone's also said it, but it is a genuinely compelling feature if you stream or record gameplay on the regular. AMD's alternative isn't yet on par.
Broadcast - Again, if you stream regularly, this might be compelling. However, I know some people would find RTX Voice useful.
CUDA - My personal big reason on why. While I still hope for OpenCL to catch on, many of my most-used programs still work better with CUDA, and this, unfortunately, has me platform-locked for a bit.
And I'm just going to say it. Green's just got a better track record for rolling out stable release drivers than Red. While AMD's been getting better, they still have some ways to go.