This is a pretty silly question (sorry, no offense intended) when we are literally 48 hours away from a new ownership group taking control.
It is clear that the Angelos family didn't care for doing too many of these kinda deals. Although it's worth noting that Chris Davis sort of qualifies by your metrics (exactly 7 years, over 150M).
I think it's pretty clear Elias and Sig wouldn't mind operating with a top 10 payroll in MLB instead of a bottom 3. But that is up to ownership. John Angelos would certainly never have approved something like that. But now we are on the cusp of getting a new owner with a net worth that is approximately double that of the Angelos family.
Another wrinkle is that some of our top elite young guys are Boras clients so they will be much harder to extend on the kinds of deals you are talking about.
Will we EVER sign a young player to a contract like that? I think yes. But who knows when.