I imagine that most companies would use Redimo on their web servers. In that case, the GPL wouldn't require them to do anything, so they could always use the software for free. Even the AGPL wouldn't help much, because it would only require companies to open source software that directly extends or modifies Redimo. MongoDB dropped their use of AGPL for exactly that reason.
Have you considered using the Parity Public License and selling private licenses through License Zero? https://paritylicense.com/ https://licensezero.com/