1. Chrome as part of the Google ecosystem prefer that you download from there approved and certified own server and Boxed system
2. Chrome also warn about downloading software that are of unknown origins , being an old game, there is no one paying nor interested in certifying it
as safe anymore.
3. If they wanted money they would have done like Star Citizen and ask for tons of money and moneytized every ship and item in the game and you would see ads everywhere and popping up every time your moving your mouse.
4. It was put on a sandbox ( no internet ) , no other software installed but OS to see if it dialed , connected or gathered information or did anything else to the OS and other installed communcation software. It only try to dial the ENB emu server depending on the one your asking to connect to.
Hope this reassure you and convince you to install and come join us in the game. If not it's your loss really.