I gotta be honest, your replies are very wordy and I'm having trouble following.
I would in fact say that you have only one (well, two) power providers. You have one mail delivery service, presumably random-online-shop.com isn't providing you mail service right? That's the same thing here. Your "provider" doesn't produce the energy. They, like in the packages example you used, are simply handing off the "packages" to your power provider (the mail service) who then administers and provides you with your power (delivers your mail). They have the power at that point, it's on their grid, and you want the power, so they give you the power. You're still paying the other company, to pay Ennexis, to provide the power. These companies just make it.
And again, if all the packages are the same, there's no difference and it doesn't matter, why would you sign a contract with any of these companies specifically? Why doesn't the entire NL just buy from the cheapest company if it's all the same to you as an end-user of the network?
Anyway at this point I'm just happy to be able to push a new idea on other folks here. The concept of govermment-run programs is still scary for some reason, but we do public/private partnerships very well here. It could just be that we have different understandings of the word "provide", which I'm fine with. Who am I to tell the Dutch what words mean lol. Feel free to redeem your Charity Coupon™️ if you'd like. Thanks for the chat.