I completely understand your question, but my comments are true! In 1999, SWT proposed a very extensive upgrade to implement 15 carriage trains for your services, a flyover to allow trains to cross into the Eurostar station and 12-car suburban services. Despite very large amounts of money being invested to develop the schemes, after 2 years of discussion with the then Strategic Rail Authority the plans were abondoned.
So there was no lack of vision or effort, but it is deeply frustrating that the schemes were not progressed. We have worked tirelessly with the Department for Trainsport to work out how we increase capacity on the network.
Unlike other routes, there are no simple measures to increase capacity on the mainline services - by Dec 17, all trains for both the morning and evening 3hr peaks will be at the maximum length that the infrastructure can accomodate and we already run 24 trains in the peak hour all the way from Surbiton to Waterloo - no one else attempts to do this.
There are many reasons why the Infrastructure, which is owned and funded by Network Rail is not as relaible as it needs to be to support such a busy railway. We are working hand in hand to improve the quality of the railway, noting a 57% increase in track renewals in the last year, infrastrucrure delays are now falling - but any incident with a train every 2 mins is immediately very significant.
So, I am completely responsible for the railway, but the consequences of previous decisons by funders (DfT and ORR) despite over 400m this year in premia paid by SWT to government, do have a consequence on the options I have. We are working hard to resolve all these issues.