The "crop-factor" has little or nothing to do with the lenses. It's about the sensor geometry --> putting a sensor smaller than 35mm film into a 35mm body with a 35mm lens mount.

Both makers have "format specific" lenses that one can opt for to gain wider angle coverage than with legacy 35mm lenses.

I'm really happy to "deal with" a "crop factor" --> my camera is smaller and more versatile than a "full frame" behemoth, not to mention much much cheaper.

And when I do use "full size" lenses, the sensor uses the "sweet spot" middle area, giving better image quality than normal for a given grade of lens.

Cheers