Life is Roblox!
I am not too familiar with the Roblox Tycoon source material. So feedback is not going to factor that in. This game does remind me a lot of Factorio though, with the belts. I think a little factorio like game is actually a great concept for a Holojam game. And it certainly is original.
I thought the art was very cute. I especially liked the little grems in the boxes.
You have quite a lot of mechanics, but they maybe aren't quite used as much as they could be. I recognize that the game jam probably added a lot of constraints. But I think a few additional tweaks can help showcase the mechanics you already have. For instance, there are a lot of different conveyor belt patterns, and the option to add extra shoeboxes, but I don't think there is anything preventing you from just going with the simplest design with just one long conveyor belt full of blue beams.
Something to incentivize a bit more planning can help showcase the mechanics you already have implemented. Things such as "rocks" or "walls" you cannot remove, a few prebuilt items you need to use, a more limited build space, or maybe even grems being "full" after a period of time are all ideas. But a lot of things can work.
I also wan't quite sure what exactly the blue beams and red beams do. The blue beams quickly allowed me to get so much money I lagged the game out. (But I won't lie... seeing a slow march of gigantic, burnt, marshemellows was something that gave me a laugh I hadn't had in a long time.). So just a line of text explaining their effects can help a lot.
Finally, I enjoyed the references to other members. But I think there is a lot of potential to integrate them into the game a bit more. Things such as making the corruption member's items have special properties (I could not tell if they did). Since at the moment, there isn't really much thought needed to deciding where you want to put the members. Although maybe the joke of Gigi Corrupting people with Roblox alone may be worth it.
It's good to see someone make a game like this for a gamejam though! Good work.