You basically took the same route as these companies and while your intent may be different, from the outside it looks like another company making a grab an Open Source software with changing licences and renaming products.
Again, it may not be your intent but you made the first mistake in marketing which is - see how others have done it and what the outcome it.
For me as a Tech Lead/Architect - currently looking at event-based architecture, this is a bit of a turnoff of the entire product stack - because it suggests you might be lining things up to sell off.
I get that people having a problem with the way that your company does business might seem like a personal attack (especially if you're the CEO), but that sort of instant aggressive stance does nothing to alleviate people's concerns, and instead rather makes it seem like you're deliberately attempting to shut down a good faith conversation.