I notice some online casinos launching under the same license, not sure if these are owned and operated by a single company or if that company offers white-label services.
I call them sister platforms 'cause they seem to share similar attributes.
1. Similar license across many different platforms, some new, some old
2. Similar game library
3. Similar promotions, bonuses, loyalty/vip program
4. Similar UI, site design
Won't these platforms have shared backend and player data? Even a shared system for deposits/withdrawals? (Probably not the case if it's whitelabel, cmiiw)
So, if you come across one of these platforms, would you be willing to sign up and place bets? Or would you prefer a standalone online casino? One that has its own license, design, and unique promotions.
P.S. I'm not saying it's a bad thing, just asking for some insights.

There are many licensed casinos that are unreliable, and there are unlicensed casinos that are reliable, so a license alone does not define a good online casino. Nevertheless, some jurisdictions, particularly those with offshore licensing regimes, permit the use of the same license number; however, this largely depends on the type of license and the regulator.
White label and sub license platforms share the same license number for brands on their platform. Due to the rapid opening of casinos, this is highly favored by the Curacao casinos.