"Private industry is much more efficient and faster than NASA"
Time from first concept to first operational flight:
- Saturn V: ~11 years (1957–1968)
- Space Shuttle: ~13 years (1968–1981)
- SLS: ~14 years (2012–2026)
- SpaceX Starship: 21 years+ (2005–?, no operational flight yet)
¯\_(ツ)_/¯