Depends on so many things probably the biggest is price for a "Factory rifle" could be $300 or $3000 and across those my accuracy expectations would vary wildly. Is it a pencil hunting rifle, is it a heavy barrel match rifle, etc. etc. People's expectations in general have gotten out of hand, I see tons of posts with people upset that their no name generic battle AR won't shoot 1/2 MOA groups with $10/box ammo. Usually fueled by tons of people posting on the same forum that their $500 bargain AR shoots 1/2 MOA "all day" with surplus ammo. I really doubt that if you took 100 Remington 700's plain jane hunting rifles and put average priced factory hunting ammo through it (not match ammo or top hunting ammo) that they would consistently do 1 MOA, probably not even 1.5 MOA especially in a light hunting stock that's not bedded. Not even sure the generally very accurate Tikka's would do that on average, but they almost certainly would if you went to match or a good handload. You're also not going to get an unbiased response here because most of us are chasing accuracy. It's like asking if you should buy a corvette on a corvette forum......of course you are going to get most answers pushing you that way.
I still feel like a reasonably priced factory light hunting bolt rifle (under $1000) should shoot 1.5" with average quality factory ammo. Now if you pay more than that, it's a heavy barrel rig, you are using match ammo, and/or work up handloads for your rifles, it probably changes. For example if I bought a Seekins or GAP rifle and worked up a nice handload for it, I'd certainly be unimpressed if I couldn't get it to shoot better than 1 MOA.
I would tell your friend, depending on the rifle, that he should be very happy that it shot four 0.75 MOA groups with two different factory ammo brands. Especially if it was hunting ammo. It will likely do better with handloads and a good work up.