Unity is NOT a drag & drop only engine and you also can work very much code oriented if you want to, it’s just not the primary facade they’re selling and you have to do a bit more work … I’d expect all the really big projects do this as I’m quite sure, it would be a nightmare to create games like Wasteland 2 if you’d want to get everything done in a mostly drag & drop fashion and also because sometimes you get that horrible situation where some internal linking just gets corrupted.
No sane developer will (IMO) base a huge game on these kinds of functionality of Unity, it’s only something to impress newbies or handle smaller projects or maybe a group of devs that’s mostly artist/designer based. But “real” developers know, in the end you have to do real work and they can do so. I’d bet there are many high profile games using Unity primarily as an abstracted multiplatform renderer and texture manager but handle almost everything else manually.
Still it’s a monster of an engine, I just recently installed the most current version because of a contract job request and it’s more liked 15GB instead of 5 
Right now I’m in discussion of replacing the coder of a project (he vanished without a note) as a contract job and they’re using Unity so far. Even though I did some Unity contract work in the past I’ll try to move over the project to Corona as I much more prefer the lightweight style and the, from the ground up, code based workflow of the engine - well and I also love coding in Lua 
With regards to money - IMO both engines are kind of free. If we’re talking about a few $100 a year, we’re not talking about any serious money for anyone who’s intend is to monetize the games made with the engine. Simple as that - think of any other business you can do with sooo little investment as developing games these days?
I actually used to work for a subsidary company of an 3d engine dev in ~2002/3 and back then you had to pay at least six figures per project to use those engines - today you get absurdly much better technology for less than what most pay per month for their cellphones. In my mind, it’s ridiculous to base any decision on todays prices at all, if you do so, you’re not even a serious hobbyist, you just don’t know what you need/do.