Full Page Ads

Inspired by the full page ad to Michele, I just wondered who would pay for full page ads. Apple Daily today got 110 pages and I found 16 full-page ads...
No specific sequence:

1.1 citifinancial
1.2 Smartone-Vodafone
1.3 Cable TV (HMC)
1.4 Hong Kong Federation of Youth Groups
2.1 Bird Nest
2.2 Ho Choi Group
2.3 CSL
2.4 Apple Daily (well... may not be a good count)
3.1 English Language College
3.2 Kee Wah Supreme Moon Cake
3.3 2 Financial
3.4 Konew Financial Express
4.1 Physical
4.2 Rolex
4.3 Standard Chartered
4.4 Nokia