Let's dive into this a bit more. Yes, the logic holds that you don't need an elite TB to win and that if done wisely, you can find acceptable backs while using the money saved to fill in other positions.
- The Chiefs won the SB In 2019-20 with a guy they signed in FA - McCoy, and a UDFA in Damien Williams. They met the 49ers in the SB whose strength was running the ball. Their RB depth chart consisted of a FA in Tevin Coleman, and two UDFAs in Breida and Mostert.
- In 2018, the Pats won with a trio of TBs in Michel (last first round pick), Burkhead and White. The Rams running game was Gurley, who yes, was a top pick and the Rams paid a ton for, but they went on their late season run and playoff run with him splitting carries with a guy they picked up off the street in CJ Anderson. And Anderson was actually the guy getting key carries in their playoff games.
- In 2017, the Eagles beat the Pats. The Eagles run game was arguably one of the best in the league. Their run game consisted of a guy they picked up in FA in Blount. They had two UDFAs/late picks in Clement and Smallwood and then midseason, they traded like a 4th rounder for Jay Ajayi. They beat the Pats whose run game consisted of a hodge podge of guys like Burkhead, White, Lewis, etc.
- In 2016, the Pats beat the Falcons. Pats had Blount and White and Lewis. The Falcons had Freeman and Coleman, a fourth and third round pick.
And when you keep going back you see way more teams have success without investing a ton in the TB position than you do teams that spent on a ton on the TB position. Seattle is one with Marshawn Lynch.