"With four countries this is a problem," Mohamed bin Hammam told Reuters late on Thursday.
"It involves a lot of marketing and a lot of energy. You get something from one government, but not another. Most of them are amateurs hardly committed to their associations, maybe just an hour a day. We have to have commitment."
He added: "If one country fulfils its obligation and another one doesn't, this is no good to us."
The July 7-29 Asian Cup will be shared by Vietnam, Thailand, Indonesia and Malaysia, and the AFC has made no secret of its dissatisfaction with some of the co-hosts.
Thailand almost lost its hosting rights after repeatedly failing to meet deadlines for upgrading stadiums, while Malaysia was told to focus its attention on the Asian Cup rather than a visit by English club Manchester United in July.
Hammam said the decision to award four countries the tournament was intended to give more fans the chance to see Asia's best teams in action.
"In the beginning of our term we were idealistic," he said.
"We
"One country is more appropriate in terms of logistics. Dealing with one national association and one government, it's like dealing with one mind."
ROTATION REVIEW
Hammam, who last month won a second term as AFC president, said the body would also review its decision to rotate the tournament between four zones in Asia, namely West Asia, Central and South Asia, East Asia and ASEAN.
Candidates to stage the 2011 competition are currently restricted to West Asia or Central/South Asia, which has prevented newcomers Australia from bidding.
India, Qatar and Iran have so far submitted formal applications.
"We started to have the competition on a rotational basis but this won't help the real competition," he said. "This means only a few countries will be interested in being hosts.
"So far, I have received support for an amendment to have only two zones, but they (executive committee members) are prepared to open up the bidding to (countries from) all the zones."
The AFC is set to name the 2011 host country on July 28, the day before this year's final in Jakarta.