Private property is what allows for the division of labor. Without it, you can't have complex products like cell phones. You can't have cell phones without capitalism, period.
How is capitalism "inefficient?" What are you comparing it with? It's certainly more efficient than socialism. Bankruptcy is one of the things that makes capitalism efficient. Under socialism, inefficient enterprises that make products the public doesn't want never go away. Efficiency requires that such enterprises become extinct.
How was Borland better than Microsoft? How did the later "cheat?"
I don't see the point?
With government you have civil service division of labor.
You have different specialists on health, housing, structural engineering, finance, etc.
That is like claiming the Army does not have motorpool specialists for some reason, because they are government?
I don't see your point?
Almost everything we have invented came from government research, like the internet, NASA, DARPA, etc.
I don't know the exact history of cellphones, but I bet it came from military needs and DARPA research.
When you have one company gaining a monopoly and making a dozen go bankrupt, that is not efficient at all.
Huge amounts of labor are wasted and lost.
Socialism does not at all prevent advancement.
Again, the space race, evolution of planes from propeller to jets, etc., were all accomplished by the government.
It is only government that can be innovative, since they don't need to make a profit, and can try risks.
What product has socialism made that people did not want but would not go away?
Companies like Borland, Digital Research, etc., make better operating systems, languages, integrated development environments, software tools, etc. They were smaller, faster, cheaper, less buggy, easier to use, etc.
One of the ways Microsoft cheated was to buy up shelf space, denying competition being able to be sold by wholesalers and retailers, if those retailers and wholesalers wanted to buy ANY of Microsoft's products at all.
When I wanted to buy computers wholesale, say 10 of them, I had no choice as to what OS they came with.
If I wanted no OS because I wanted to load my own, it still came with Windows on it. Buyers were not given any option. So then all the competition with much BETTER operating systems, could not compete. Any alternative OS would have increased the price, since Windows was already included whether you wanted it or not.