Its the very reason you dont go for hosting - you go for co-location, you put your own hardware in the the POP (Point of Presence) on the internet - if you go for hosting then you will be one of many on the same cluster typically.
What a load of codswallop.
It's like saying "I fly a plane".
Yes there's hosting that's like a battered old flying school Cessna ..... but there's also hosting that's like a Boeing or Airbus with all the redundant systems etc.
Like most things in life you get what you pay for. Don't expect super duper hosting that can take the load if 11,000 people if you're only willing to pay the hosting provider 99p per month.
There's not much point going for co-location if you don't have the technical staffing to take care of it.
Any monkey can stuff a box or two in a rack in a co-location facility ...... it takes experienced engineers to get the most out of the independence that co-location gives you,
Given unlimited resources the site would be highly avialable all the time.
Ah yes, similar to the old...
Cost
Quality
Speed
Pick two..... debate
Let's be realistic here. PPrune is just a forum, yes it's a popular forum, but it is just a forum. It's not Amazon and therefore throwing money at it just to get five nines availability would seem a pointless activity in my opinion.