If you can afford it, I do think it would make a difference. I did it in my garden and before it was garbage, clay and tiny top soil from builders not putting any back when seeding/sod. I put down a dump truck of compost & dump truck of top soil on just the .2 acre massive garden and about .5 acres of lawn I added a lighter coat from another load. You can't argue with the results, it's crazy. I got fertility right and ph where I wanted it.
On a large scale, for my farming operation, no way I can do it obviously. In AG settting, my option is building soil through things like: winter rye, manure, clovers, peas, etc. Which is also a great way to do it. If I had a gazillion dollars to put 6" of compost & manure on my farm, I would. I know some folks would say it's not good or you can't. I disagree. I really think the cost & supply is the issue. No doubt manure is probably the best fertilizer out there. It is, beyond the obvious NPK, it's adding organic matter & many nutrients like vitamins & minerals. So, the last issue then is the compost- well, you're just speeding up what I'm trying to do with rye, clover, peas, etc - my plow down stuff. You're just picking a faster but more expensive option. BUT - in one schmo's experience - you cannot argue with my one piddly example of what I grew before doing this and what's there now. crazy. If you can afford it, do it. If not, look at the ryes, manure, plow downs, etc.