The deactivation and activation are usually easy to accomplish programmatically, and the folder name change should be possible under most permission conditions.

IIRC, the deactivation and activation sequences are also necessary to core for some operations and references.

~Cais.

With a premium plugin (not hosted on .org), is it possible to update the folder name of the plugin after a user updates to the latest version?

Short version: if you mean the slug of a plugin hosted on www.remarpro.com, no. That slug determines the directory name.

Longer version: contact the plugins team via #pluginreview on Slack and they’ll explain it better.