Tied, same old argument, it's just not true.
They said the same about mobile phones at one point. Why does anyone feel it necessary to pay circa $1000 for an iPhone or Samsung equivalent - because, in business (or just life), it's a tool you rely on. If you can rely on it and it makes you money, regards your line of work - you'll never think twice about what you're paying for it/paid for it. It has an intangible worth to you.
It blends into the background and becomes the same as most other expenses required to do a job. But ultimately, BT need to make Ultrafast reliable and if reliability is key to reaching those higher 'ever rolling' price points, G.fast is not the technology to using.