What you said is partially true. Successful teams have to make these value decisions all the time... And they couldn't/shouldn't pay Levitre $7-8 Million per year... BUT... I don't see that "REPLACEMENT" you mentioned...
On a related note, I find it interesting to see so many of my fellow TBD posters espousing the idea of drafting Chance Warmack, another Guard, to replace Levitre... Wasn't drafting Levitre a mistake in itself because he is ONLY a guard (and therefore not worth $7-8Million per year) and now we want to replay that same mistake by again drafting a lowly unimportant position like OG in the 1st round?
You can't have it both ways folks... You simply can't demean the OG position by saying "we can always draft one in the lower rounds" (ESPECIALLY with Buddy's track record so far...) and if you are advocating draft Warmack you are setting yourself up for another failure down the road like Levitre...
A good GM would also have worked out a cheaper long term deal with Levitre last year and not wait till the last minute when you know his price is going to be significantly higher...