Face it- unfortunately, the days of RM are nearing an end. They have failed to remain competitive in a market where other companies have come out with newer kits and better tooling.
Look at how the quality of DML armor continues to improve, and the range expand. Trumpeter has also been aggressive with an increased range, and their quality continues to improve.
On the other hand, what have RM, Airfix, Heller, or Italeri come out with recently? Even Tamiya is in a decline- their kits are superbly engineered, but they aren't bringing anything new out.
Without doing any market research, I'd guess that 80% of a new kit's sales occur within the first year of introduction, when we modelers buy them and a bunch of resin and brass and store it all with plans to build in the future. Even if the kit isn't perfect, we like the subject matter, scale, and appeal, and this is why we buy, even if it never gets built.
This is why companies like Trumpeter and DML have become dominant- they bring out a lot of new stuff, and even though most of it isn't perfect or as well engineered as a Tamiya kit (talking about Trumpeter), people are buying them at a premium price.
RM, Tamiya, and the others will continue to lose their market share unless they change their strategy for theintroduction of new kits.