Unless you want any kind of reach, aperture control, modifiers, external lights...
You're getting a body, lens(es), lights, modifiers, triggers and stands for £500?!??
Iphone X has manual control and RAW through a £5 app. It has a really decent F1.8 28mm(eq) lens and F2.4 52mm(eq) lens. Its low-light ability is as good as many entry-level DSLRs I've used despite the tiny sensor.
Anyway, my point is that in the sub-£500 DSLR market (new), there's little or nothing there that I'd say is significantly better than the iPhone X, or arguably even as good. It's also incredibly compact compared to DSLRs and completely intuitive - its literal child's play.
If you're talking 'systems' as opposed to just DSLRs then obviously it doesn't compare. But then, the majority who buy entry level cameras don't usually graduate beyond the kit lens. If they do eventually buy into the system or take their hobby to the next level, the body is one of the first things to get upgraded.