Re: Ultrabook sales are forecast to grow 92 per cent compounded through to 2017.
Wrong here, others are not trying to "COPY" anything, they are just following the trend like Apple did with the Macbook Air, Apple saw that small screens (netbooks) were becoming very popular running XP so designed the Air as their small screen device. It just happens that for the extra hundreds of pounds you paid for the Air you also got a faster system with great battery life, better ability to run almost any program you could want, in a very desirable and light case.
When released its no wonder that the Apple take on the netbook had such a wow factor. Now Intel are trying to create the netbook replacement in pc's and are following the trend started by Apple.
Its the same with romours on the new iPhone having a larger screen, it will only get that as the Samsung S3 and Note plus HTC one's are doing so well with larger screens.