The Institute billed Dotcom's address, along with fellow Mega founder and co-accused Mathias Ortmann, as a chance to engage with those behind "New Zealand's largest tech start-up this year".
The pair told the gathering the revelations of mass surveillance by the United States' National Security Agency and its partners, including NZ's GCSB, had skyrocketed demand for Mega and its encrypted cloud storage system.
On the election, Mr Dotcom said: "I'm going to get engaged. I'm going to help as much as I can during the next election to make sure there is a government that takes the internet more seriously."
He took a swipe at Prime Minister John Key, saying he had traded involvement in the Megaupload takedown last year as part of the Hobbit deal, struck in 2010. He dismissed Mr Key's claim the spying law had been misunderstood, saying: "The law says you can't spy on New Zealanders. John Key stands in front of cameras and says 'we misunderstood the law'. How stupid can you get?"
Mr Dotcom said the discovery of illegal spying and other errors by New Zealand agencies had created a potential shift in responsibility for the Megaupload business, which he has previously said was worth billions of dollars.
"The potential settlement or damages situation has changed quite a bit since we discovered what went on. Potentially, at some point, we could go after the New Zealand government for full damages. I've said before I don't want to be a burden to New Zealand. The majority of that (settlement) would be reinvested in submarine cables, rural broadband."