How much more effort do I need to put into saying I don't think it's all that good than my original comment?
As a publicly owned service, the RM is headed for long term oblivion. It's simply a fact that it is a logistics business with a series of impossible obligations to service. It has too many properties, too many people, and too few letters to deliver. It's too easy for private sector competitors to build parallel infrastructures and take away from it that business which they want to have, leaving RM with the dregs.
You have been focussing on its current level of profitability, but that took a giant bailout to achieve. Before long its profitability will again vanish as the stresses mentioned above build into new unaffordable obligations, mostly of the pension variety.
Politicians cannot be relied upon to reform this sort of entity because they are only in their jobs for the short term and the problem needs a long term fix.
Politicians have two other unhelpful habits. One is that they will say anything at any time to make other politicians look bad - it's a dreadful habit but they can't help themselves. A huge state asset with long term perils that is in need of coherent reform simply can't get that in this country. In Scandinavia, where competing parties are capable of working together because they aren't all tribalist monsters like you and those you so viscerally hate, this would be achieved. But with Britain's tradition of pointless political vitriol it will not happen. Our politicians will block sensible reform because people like you encourage them.
The other unhelpful political habit is a tendency to wait until the political time is right to do a thing. There will be entire years where the government doesn't dare announce a contentious policy. During those years, the opposition, knowing that it is unavoidable, will frequently announce the policy in question, but only in terms of their commitment not to do it. Eventually they will do it, but that combination means that every important reform will arrive 5 years late.
The Royal Mail is close to the point where it becomes smarter to announce a plan to wind it down than to attempt further expensive reform. If people don't want that to happen, then very serious pragmatism is required. Not the usual politically charged bluster that brought it to this state.