You're probably right about that.
The idea is in essence not bad, but $99/yr is a bit sick.
They
at least should provide a free certificate for non-commercial use - but that's a topic you're already in your other post
FYI:
I just read some Apple documentation on how to enable/disable Gatekeeper:
To disable Gatekeeper using the spctl command. In Terminal, enter the following command:
$ sudo spctl --master-disable
Confirm that Gatekeeper is successfully disabled by entering the following command:
$ spctl --status
With Gatekeeper disabled, the previous command prints the following text in Terminal:
assessments disabled
On my Mac however it says:
spctl --status
assessments enabled
Suggesting that Gatekeeper is enabled ... ?
(specially considering my security settings - see earlier post screenshot)