...A doctor of engineering I believe, added a remark on another forum that it was impossible for Canon at this stage to catch up with the competition? I know nothing about it but he researched it and came to this conclusion...
A dermatologist is an M.D., but if I need a heart bypass, I won't be going to one. Unless your "doctor of engineering" actually works in Canon's research labs, he knows nothing more than you or me.
That's not true, it requires investment of billions USD to get the same sensor lines as for example Sony has.
There is no indications of that has be done in the annual reports from Canon or from the market, it is necessary for example to buy new steppers and lenses from zeiss and in the million dollar class to the lithography equipment for larger sensor areas as APS and 24x36.
Your statement is just as untrue. Canon designs and builds their own lithography equipment, builds their own lenses, their own steppers, and are just as capable of DOING that if they CHOOSE TO as anyone else. I'd also point out that while Sony has spent tens of billions of dollars in borrowed money, putting their bond status to "junk", Canon has been raking in the hundreds of billions through sales alone. Canon is more than capable of spending a billion or two to create a fab capable of fabricating 180nm, 90nm, or even 65nm parts. It is a matter of whether they choose to or not
. The one thing about Canon is they know when to protect their bottom line...and now really is the time. The market is stiffer, the majority of modern sensor development applies to markets Canon cares nothing about (very small form factor sensors for small form factor devices like phones, phablets and tablets) and which do not present significant competition to their primary markets, devastating natural disasters that are unpredictable, and when they hit require reserves of money to recover from, and at the moment the competition is still barely putting a dent in Canon's dominant market share despite their supposedly radically superior "technology".
If and when Canon actually feels the pain of all the innovation going on in the marketplace, I don't doubt they will compete. I also wouldn't be surprised to learn they have a number of their own sensor manufacturing techniques to improve their designs up their sleeve, which they will drop on the competition when it serves them best. Technology is only part of the game, and if Canon's success and market share are telling in any way, not the most important part.