If I understand correctly it is due to several factors. The big IL
-86 is out of production, while the smaller IL
-96-300 is produced in very limited numbers. The Tu-204/214 are also in production and can be called a 757ski for those so inclined. The TU
-334 is up for certification, and there are a whole slew of Antonov's as well. Another problem is that TU
/IL planes are made at different plants by different holding companies, so it is very confusing as to who is making what. Market forces also come into play. I don't know how Embraer did it, but somehow I don't see the Russian/Ukrainian aviation industry pulling the same sort of thing at this time. So essentially, there is a family of aircraft, just not really a central marketing body as such.