"I witnessed from first hand how size hindered their efficiency and their competitiveness until they are finaly beaten by smaller competitors.:

then why do large companies exist. Why do they bother buying other companies. Why do 5 people own more wealth than the bottom 50% of that is not "better".

Big businesses can afford to be less efficient and still come out on top.

Look at central heating, it costs way less per person than small heaters in every room. The same goes for every tool they have to use. It costs less to buy windows in bulk, and to deploy other types of software. Its a lot cheaper to run a massive factory than having a million individuals do it. That's why weaving went industrial.

Tell me, how efficient is it to ship a hundred product in one truck vs only being able to make and ship 10.