Regardless, I think he meant more in terms of scale and detail rather than complexity of logistics. The point he was making was that you can’t demolish an entire area, do the ground work, put in utilities and then build an entire theme park, with very detailed theming, faster than PL can build one small area. Not in the UK anyway. And I’d definitely agree with his point.
Nah, the problem is that such a coaster would be logistically difficult to build, but of course it would be exacerbated by poor soil conditions.
The tower in the centre of the ride is a heavy structure, which means deep foundations that would have to be done first. And they would go in the middle of all the coaster foundations if the track were to pass through the tower. The tower and the coaster are subject to different dynamic forces, and to avoid over-straining either structure, they would have to be built as separate, intertwined structures. That means the coaster and the tower would have to be built bit by bit tangled inside another: first a layer of structure, then a layer of track, structure, track, and so on ... probably made by different contractors too, as the coaster contractors have no experience with towering themeing structures and vice versa. That means a lot of on-site coordination. And then they want to introduce an element of fire to a coaster that already includes a wooden track and a themeing structure with enclosed spaces. All possible, but designing it in a way that would pass fire safety requirements is an expensive affair.
All in all, it would surprise me if the total cost of the coaster would be any lower than Expedition Everest, which famously was the most expensive coaster in the world until Hagrid's opened. Considering inflation and labour costs, it would probably pass a hundred million pounds for that coaster alone. It's a lot to pour into one attraction. Disney can justify it by getting a bajillion guests every year, but even the overly optimistic gate figure estimates of London Resort would be insufficient to recoup such costs any time soon.
blooloop.com
12% rate of return, this is sounding just like that "investment opportunity" park in Bosnia (still waiting to be paid those guarranteed profits 
).