I've done some more research on PS Now & basically it's treated as a red-headed step-child. LOL There's zero integration with the Playstation Store. I have visited their web site & their store using my PC & their mobile apps to find out which games are downloadable vs streamed. Only thing I could find was that out of the 826 games they have on the service only "300" were available for download on PS4. I guess you have to download the PSNow PC app since I don't own a PS4? But I don't have a Windows machine at home for that & I'm not installing it on my work PC. For example, you can't browse the store to find out that Watch Dogs 2 is also on PS Now. You can't even click on games in their PS Now "See All Games" list & go straight to their page in the Playstation Store. And the list doesn't even tell which games are from the PS2 or PS3.
There are other major differences: no mobile support(not even a list of games unless you visit their website) & 1st party games are not released day-and-date like Game Pass. Regarding the latter, I don't think there is currently a major PS4 first-party title on the service that's been released in the last 3 years. Horizon Zero Dawn was on there last spring, but what's funny is they're still being advertised as being available until April 7. Their web site is also still advertising Just Cause 4 as being available until 7/7/2020. LOL
I did find this in their FAQ that was quite interesting...
Why do you have to validate your PS Now subscription every couple of days? I don't think Xbox require that on anything they have. I think you will need to do that for Game Pass PC if you've been offline for 30 days though. Guess if you're online 24/7 it's no big deal, but those guys in cabins out the wilderness or on submarines better watch out. LOL
Lastly, I also noticed that there are no discounts for purchasing the game outright? On Game Pass you can purchase the game for up to 20% off. You also get a 10% discount on the DLC.
After all that, I think it's crazy to compare the 2 services. There's a reason why people call Game Pass the best value in gaming. It's just going to keep getting better & better as more of the 1st-party content starts showing up. And the third-party games are not bad either. Once PS Now gets more integration with the Playstation Store, has better first-party content & allows all the games to be streamed or downloaded, then maybe we can revisit the service. For now, it's not a good value compared to Game Pass.
Tommy McClain