Re: "it must still pay maintenance fees to Capita for the upkeep of the software"
I think you will find that the survey will be very carefully worded such that there is no legal responsibility taken by the surveyor or their company. They can be useful to get an overall idea of the sate of a property but they are useless as a form of insurance.
I once bought a house which had some off cuts of wood piled up in the cellar coal room. The survey 'usefully' pointed out that it might be a source of wet or dry rot. Well bugger me, who'd of thought. The same survey noted that a sink in one of the bathrooms was a bit crazed and should be replaced. No matter that it was a two hundred year old original fitting and probably worth more than the cost of the survey.
One of the main problems I see is that the fear of speculative litigation and the requirement to maximize profit has undermined one of the original purposes of such things. In our wonderful world, the exact wording of contracts is given much more weight than it's intent, not to mention the moral obligation of suppliers to actually providing usable goods and services. Doing a good job is no longer seen by such firms as part of their reason for being. Probably in part, because however shit their last delivery was seems to have no bearing on whether or not they will get another job in the future, even from the same schmuck.
Can't help thinking that if the only measure that is given any credence is money, then this mess is inevitable.
Bugger me, I think I might be turning French. The horror...