Agreed - it's a lot more complicated than people on here are suggesting - there seems to be a view that "we should have some 125mph trains running over Ribblehead, without having to pay Charter fares", even if it means that the majority of passengers are put on replacement buses - but it's really not as simple as this
Sure, all things being equal
But diverting trains via longer routes means additional units/ staff are required
It means we need to regularly divert trains that way the rest of the year to maintain route knowledge (e.g. would we disrupt existing passengers by slowing down a couple of London - Glasgow trains a day so that they can take the slow route via Ribblehead to ensure that enough Avanti staff keep the S&C on their cards?)
It means finding paths on the other route (e.g. if the London - Brighton trains are to go via Horsham then how does that affect existing services on the West Coastway? Do we cut some local services to make way, putting those passengers on buses instead?)
It means we need additional trains to cope with the longer duration of the diverted route
It means awkward decisions about which other lines to pinch stock from (e.g. if Avanti need self powered trains for S&C diversions then is it okay to remove the Holyhead services? Or replace other routes with buses so you can focus resources on the line that's being diverted?)
It means we need to take decisions about what to do with other stations on an affected line (e.g. if the WCML is closed at Shap then people here would want to divert London - Glasgow trains via the S&C but then what about London - Lancaster passengers? What about Penrith - Glasgow passengers?)
Then, if you accept that we'd not be able to run through trains (and London - Glasgow passengers would be taking an electric train from London to Preston, then a diesel train from Preston to Carlisle, then an electric train from Carlisle to Glasgow) then the disruption of changing from train to bus becomes less significant
Then there comes a point at which we'd have to put large numbers of passengers on buses anyway, so is a token "every three hours" kind of service level more of a box ticking exercise than anything (but nice if you want to stand taking pictures of 390s crossing Ribblehead)?
I'd rather that I had a direct train, but that comes at a cost - do we inconvenience passengers by diverting daily services via much longer routes to ensure that there are enough staff with maintained route knowledge capable of running via the diverted line a couple of weekends a year? It's like the "diversionary resilience" argument for re-opening lines like Okehampton - Bere Alston - nice in theory but comes at a huge cost)
There's no way of tracking buses?
https://bustimes.org/map#18/53.382/-1.47 << thousands of buses tracked - you can check their location from your phone before you leave the house
You're getting dangerously close to conspiracy theory territory here
When was the era when the stock was the same though?
It's a bit more complicated than the colour of uniforms - e.g. I don't think that the Unions would have allowed the WCML staff (trained on their 86/87s) to get behind the controls of an ECML HST
London - ECML - Edinburgh trains are run by different stock to London - WCML - Glasgow trains, and have been since before I was born - so are you suggesting that we magic up some 800/801s to extend London - Edinburgh services to Glasgow, or that we use some of the WCML 390s down the ECML (which would require a bit of route training etc)? Maybe if we had one type of train for all Long Distance High Speed services it'd be easier to pinch stock to suit circumstances like this, but you're talking about something that has never been the case - fine in theory but seems a bit odd to blame sectorisation/ privatisation for the fact that ECML trains are different to WCML trains, when it was never the case at any time in history (in the Deltic era, in the era of double headed 50s, in the days of A4s...)