The Annic Nova adventure occurs in 1105. Elsewhere in 1105 setting canon drop tanks are only just being built for civilian use in the Spinward Marches - despite them originally being a TL12 technology the Imperial core worlds have only been using drop tanks on civilian vessels for couple of decades. Note the current rules just say you can just build drop tanks.
The Annic Nova and other ships like it are encountered in the Spinward Marches and the Imperium takes a look at the TL14 technology that they failed to invent due to the widespread hydrogen fuel infrastructure and efficiency.
Notice that this is setting detail, not rules. Just because something is TL9 doesn't mean all TL9 cultures discover it.
How long to reverse engineer - months, a year?
How long before the technology enters a military testing program, how long to draw conclusions, how long to build prototype ships?
When do you declassify the technology for civilian use?
A collector takes a week to charge (note that in the original adventure it is 1d6 weeks) during which the ship can do nothing else. So you now need highports or interface craft for merchants where none were needed before. Or the ship can land, offload cargo, leave crew dirtside to look for passengers and cargo, while the ship takes off and spends a week in space to recharge, then land to pick up cargo and crew - how many extra days are you adding to the jump cycle and how many trips per year are you losing? Who is goung to build the new infrastructure?
Here is the interesting thing - it is up to you how you would want collector technology to develop in your 3I. Not that it matters much because Strephon is still going to be assassinated, Virus will be released and the Empress Wave is on its way - that is according to the OTU
