Edit after original post:
Aack! My eyes glossed over that you’re asking about the limits of the 3D Warehouse, not Trimble Connect! So while what I wrote below is, I think, good information/advise, it’s not really an answer to the question in your second paragraph. @Endlessfix answered that one well enough!
Not exactly!!! I made the assumption that your current licensing model is individually licensed instances of SketchUp downloaded and run locally - NOT any of the web versions of SketchUp.
The problem with that - as it relates to Trimble Connect (TC) – is that that model gives each license holder only 10M of TC storage space.
One of the advantages of TC is that you can share your files - on a project by project basis - with ANYONE with a TC account - they don’t even need to be SketchUp users.
But your use case is for a company wide repository of files. You could, theoretically ask each of your users to share everything with everyone else in your company, but you would end up with a LOT of locations people need to track for to find what they need.
What I’m suggesting is that your company purchase a SINGLE additional license - this time for SketchUp Shop at a current cost of $119/year (and I must again thank @Box for correcting me on what version you need!) - which will come with unlimited TC storage space. Then create one TC “project”, share it with everyone in the company, and create a folder tree within it for all the stuff you want available to everyone.
I’m NOT suggesting you replace your existing SketchUp licensing structure, just leveraging the unlimited TC storage space included WITH a SketchUp Shop subscription to give a you a single share point for everyone in your company.
It will require a bid of administration - any time your team changes - hiring/firing/quitting/reassignment, you’ll need to change the TC sharing. But better to do it once, quickly, in one place than have everyone make the required changes in their individual, space limited TC projects!
If your licensing structure is Network licensing, then I recommend having whoever administers your licenses contact SketchUp/Trimble directly - after they understand what you want - to see if there are other options.
Hope this helps!