"I was in Napier [last week] for the Japan-Canada match and spent the evening with John Kirwan and some of the coaching staff, and it was hard to comprehend that they were going home already. It's really sad."
But host cities would be feeling that it had been worthwhile getting involved in the tournament, he said.
Financial benefits so far include international credit card spending of about $90 million - which does not include pre-purchased travel and accommodation.
Snedden said the tournament had spent $60 million on accommodation alone, and accommodation costs for visitors would add much more.
The tournament's costs are just over $300 million, with an estimated $150 million going to the International Rugby Union as fees.
Snedden said analyses of the tournament's costs would be made eventually. "I think it's really important at the end of the tournament that work is done to try to capture all of the benefits."