How so? SpaceX is a proven launch system at this point, ULA has plenty of business, and SLS isn't going anywhere soon, so there aren't many options for new entrants.
I won't be that sure about SLS anymore with many recent events concerning it:
- it failed to do full mission length firing during during the Green Run testing
- its main supporter in the Senate Shelby announced he is going to retire
- Europa clipper will launch on Falcon Heavy instead of SLS
- early Gateway parts have been recently announced as also launching on Falcon Heavy
Not much left for SLS to do & its cost and delays are unly getting more insane by the day.
