Tim Lesko, a principal at Granite Investment Advisors, thinks there is great potential ahead, like bringing Siri to everything from the home kit to the car and becoming "the best personal digital assistant."
In the meantime, Apple is still making the best technology with its iPhones.
"We're going to focus on iPhone sales for the next few years until the rest of the shrubs that they've been building finally start to compete with that big tree that is iPhone," he told "Power Lunch."
For Jason Ware, chief investment officer at Albion Financial, the latest news underscores his longer-term bullish thesis on the tech giant.
"I think these things that they are doing each year are setting the stage for a more valuable ecosystem, and that's what we hope for as investors," he told "Power Lunch."
For example, he likes the idea that Siri can now search on Google's YouTube.
"As I look at the value that brings to people who are inside of the Apple platform, I think that just reiterates that they're making the right investments over the long term to create value," said Ware.
For Gillis, the YouTube feature only underscores that Apple is not in the video game.
"It has to pain Apple that they are allowing Siri to search YouTube. Where's Apple's version of YouTube?" he said.
— CNBC's Everett Rosenfeld contributed to this report.
Disclosure: Lesko and Ware own Apple stock.