Smart people don't buy aircraft
The rate is £99 per hour for a Warrior III and £89 for a C172 wet
Well perhaps not those types
A new Warrior is about £150,000+VAT and a new C172 is also about £150,000+VAT. Depending on equipment of course. Nobody is going to pay that - unless they need that type for a particular purpose.
And knackered old ones you can rent from any flying school.
What you get with ownership is potentially something decent, maintained to your own standards, capable of real distance trips abroad, something capable of real IFR, something you can take away for a few weeks. One can potentially rent that but it's very rare and few-weeks takeaways are usually impossible anyway (without paying a massive price).
You pays your money and you takes your choice. Ownership is usually a massive hassle, a huge learning curve (in a business where there are more shysters than double glazing and loft insulation combined) but if you can do it, it's worth every penny for the freedom and the options.