Perhaps, but then some sort of replacement SRA has also been mooted. Depending on how much independence/authority that's given, there could be less or more interference.
That is a very good point. You are quite correct.
The original SRA gave up much of its power to the DfT so it would be interesting now to see how easy it would be for the DfT would now reverse the process. Presumably the power given to the Scottish and Welsh authorities could not easily be reversed.
How much power “SRA2” is given over Network Rail (assuming that is kept) would also be interesting as that was one of the problem areas with SRA1.
In terms of the original question of the thread, if it wasn’t implemented correctly, you could easily see that and SRA2 would just add an extra layer and only add to cost.
BUT - On the other hand, if the “SRA2” were given much more power over procurement for example, you might get cost savings. From a reducing “expenditure point of view” a more centralised approach might work.
Could we envisage a system where the stations are all run by Network Rail, so there is just one (or maybe two) contract for all equipment such as ticket machines etc. (happens in Italy for example) and maybe even train leasing is given to SRA2 to force down leasing costs ?
The Franchises (“Concessions” in the new post-Covid world) actually do and influence very little.
IOW - the Treasury uses the size and power of SRA2 to batter down the suppliers on cost across the board and saves ?
As we are already seeing in the airline industry's approach to the "post-COVID world", - "everyone"-- airline staff, airport staff, manufacturers, leasors - is going to have to suffer. With rail the question of who is going to impose the suffering and possibly a new SRA could be the answer.