
Photography is an expensive business, not just in the sense of the kit you need to buy but to keep your business going. You need a backup of everything in case something breaks and even then you can only carry so much while out in the field.
At a bare minimum, I'm always with 2 camera bodies, 3 lenses and whatever paraphernalia I need to get the job done. Just from a cost perspective that's around $10,000 / £8,000 / AU$ 15,500 of kit (Nikon Z9 / Z8 etc). So siging up to something like NPS (Nikon Professional Services) and I'm sure Sony and Canon have their own versions of, is important for fast repairs, discounts etc and even free loan devices on their Platinum+ level of membership.