The way it looks right now for a decent qb is very bleak. Yes, Dak's play last season and three games into this current one is costing him significant dollars. But his next contract (assuming he’s offered one) will, due to the value of retaining a quality qb in the NFL, likely carry a cap hit that will start somewhere around $20 million.
It’s highly unlikely that the two other QB's we have on roster, Cooper Rush or Mike White, will be a better alternative now or in the future.
The top of '19 of free agent qb's, which includes the Tyrod Taylor of the Browns, Brett Hundley of the Packers and maybe Teddy Bridgewater (if the Saints don’t re-sign him this offseason), doesn’t really offer attractive replacements for Dak, either.
And as far as the '19 NFL Draft, forget about it according to these so called NFL experts. Their saying it's not a particularly strong class for qb's and a surprising number of NFL teams are relatively set at the position. That said, yes, we are stuck with Dak for sometime to come.
Remember how long it took Jerry to FINALLY draft a qb. YEARS!