Originally Posted by PAXboy
I think that one of the big problems for full beds is that Pax have to be sitting in a seat for departure/landing. This doubles the amount of space for each pax and thus the cost.
It does not double the space... a seat for takeoff/landing only may be bigger than an economy seat, but it would not be the size of another bed.
Also, it is possible to have beds which can be turned into seats for takeoff/landing:
http://www.ovi.ch/b377/articles/statuscruiser/
Originally Posted by PAXboy
If they provided beds, they would not want to provide them one-for-one for First/Upper pax and so there would have to be a lottery for them on check-in. On one rotation there would not be enough for demand and on the next, half of them would be empty.
I donīt see why lottery. You could very easily define First Class as having beds and Business Class as having comfortable seats that cannot turn into beds. The paid demand would of course fluctuate... but that could be dealt with through upgrades and other means of revenue management.