I think you need to be looking at the
release cadence of games from Bethesda Game Studio's core team. When Starfield releases in 2023, the previous game, Fallout 4, would have been released eight years previously. Fallout 4 development
began in 2009 so spent six years in development. Todd Howard has said that Starfield has been something they've work on for 25 years. Remember that Fallout 76 was developed a different team entirely; Bethesda Game Studios Austin - previously BattleCry Studios before Zenimax acquired them.
The core team's release cadence has only been getting wider for fifteen years.
2006 Elder Scrolls IV Oblivion.
2008 Fallout 3 (2 years)
2011 Elder Scrolls V Skyrim (3 years)
2015 Fallout 4 (4 years)
2023 Starfield (8 years)
A return a two-year release cadence is an unreasonable expectation. For Elder Scrolls VI to be realised ion 2024-25 most of the team would need to be working on it right now but in January it was confirmed as being in
pre-production (as in not being produced) and most of the team will be working on Starfield, then they'll be fixing Starfield and making DLC for Starfield.