The Derelict would certainly have been exploited if it hadn't been destroyed. But first things first, alien life has priority over alien technology
'
Alien3' sadly dismiss what Ridley and co. stated about the company not knowing exactly what the transmission was about :
''
When they first heard about this thing, it was 'crew expandable' ''. So unless somebody has a good explanation about Ripley being wrong, shouldn't we stick to that ?
For what it is worth, one of '
Prometheus' deleted scene with Millburn indicates that in 2093, the first lifeform larger than bacteria has been found.