Let me guess. Your first language is not English (Hungarian by any chance, judging purely by your nick?). In that case I think you put it perfectly.

Yes but the Nokia of those days no longer exists. The times no longer exist. It is easy to be an innovator and market leader at the infancy of a new technology. By now, however, all the low hanging fruit has been picked. We have been through all the fancy designs and settled on just a few winners. It's the same with every evolution, whether biological or business.

There was the Cambrian explosion of life, when nature created a lot of new body designs, including some strange ones with five eyes etc. In the absence of anything else, these may even have had a chance for a while. But natural selection soon weeded them out and settled on a small subset of winning designs.

The 1980s and 1990s were the mobile phone equivalent of the Cambrian explosion. But most designs, whether hardware OR software, have turned out to be evolutionary dead ends. The world has settled on just one hardware design, a boring rectangular slab with a glass front, and just two software designs. Anything else is destined to remain at the fringe, eking its meager life from the scraps left over by the giants.

This is not to say that it will stay like that forever. There was a time when reptiles ruled the world. If you were not a reptile, you might as well not have existed at all. The few mammals who existed at the time were small and miserable. Then something happened and suddenly the dominant life form are the miserable mammals.

Will the same happen with mobile technology? Definitely. The very success of the winning design will become its downfall. There is so little variation that the same event that kills one of them will kill them all. Just like the advent of a slab with a glass front knelled the demise of the candybar design.

Is Sailfish such a death knell for Android and iOS? Definitely not. Not nearly revolutionary enough. What is? I have no idea.