Really an unfortunate case of NA esports inflation, though most of these teams could likely afford the buyout for Zander it's generally a lot more complicated than that. Each team has a budget and different ambitions. Faze is a good example of this, realistically no matter what supporting cast surrounds babybay the brand image stays the same and the merch sales and sponsorship opportunities stay the same. Esports like all sports is 90% brand marketing and 10% results.
It's all about the simple question of investment, for an established org like Faze, TSM or 100t is the difference in results going to result in a significant enough difference in income. Is a winning roster going to be more marketable than a well branded roster (this question actually launced a legendary montage series in overwatch called "blank is marketable"). So is the difference between Zander and ec1s worth the difference in buyout.
Aswell there is also that matter of finding a player that fits the system, wants to play for the team (I could see some issues from players who don't want to have to play around the political issues of TSM and having to build around the flawed Wardell/Subrossa Core) and isn't wanted more by another team who will play more. As well some of these signings could have already been made before the prominence of Zander in T2 meaning teams are already committed