Consider discarding the CLA if you anticipate third-party contributions. If you need to verify provenance, the Developer Certificate of Origin is a better approach. Otherwise, this (correctly) reads as a project which intends to take advantage of FOSS contributors for a while before pulling the rug and making it non-free again.
Also the "CLA" link just points to https://zed.dev/cla , which asks me to authorize Zed Industries to access my private GitHub profile. So at this point I don't even know what the CLA says. That's important because not all CLAs are created equal. I think some don't fully remove the contributors' ownership, which would prevent the hypothetical future closed-sourcing.
Sorry about that!