But the cash injection from the Government, which was grossly unpopular with the public, was seen as a one-time only deal and without it, Team New Zealand recognise they won't survive in the current climate.
"It's really, really hard to commercially fund a team. We're very efficient and have achieved a lot, but how many times can you knock on doors and ask to have another crack at it?" Barker asks. "The only way we can guarantee the future of the team is to be successful in San Francisco."
The America's Cup has always been a high stakes game, but with Team New Zealand's entire future on the line in this year's regatta, the pressure on Barker is amplified 10-fold. Yet the team's success in San Francisco will really be determined by one factor - did they get the design right?
History has shown that whenever the event has moved to a new class of boat there has been a bolter - one team has interpreted the design rule better than the others and produced a far superior boat. With each edition the boats generally move closer together in terms of design and speed, having learned from the example of their successful predecessors.
It is already apparent Artemis got their design horribly wrong, and with Luna Rossa effectively sailing Team New Zealand's first-generation boat, the Kiwi team are the favourites to meet Cup defenders Oracle in the final.
It won't be until the two boats face off in September that we will find out which team cracked the brief.
"Someone will have got it right, someone will have got it wrong," Grant Dalton says simply.
For much of the build-up Team NZ have led with the development of their boat. But since their capsize on San Francisco Bay last October, Oracle have made up ground fast.
Dalton appears nervous about the speed of the Oracle boat, mentioning its speed in several interviews of late.
Whether they are the words of a man who is trying to talk up his team as underdogs, or one who sees his $120 million investment slipping away, we won't know until September.
Why we should still care about the America's Cup
Cup has ferried us from hope to pride and anger
Financial and human cost of big cat mean it won't return
Tomorrow
The New Zealand public have always found the eye-watering budgets involved with competing in the America's Cup distasteful, but how much will it cost the country if we are not a part of it? And we look at what the future of the event might hold if Team New Zealand wins the famous trophy in San Francisco.