Sure it is. How effective this business model is is another story.

Either way, you don't have an inherent right to specific business models and the EU is simply not allowing a business model anymore that has been widely abused. Of course it'll hurt some but I think overall the industry will adapt and change for the better.

One example might be the provision of a ‘free attraction’ service in exchange for surveillance capabilities, and the business model being various unrelated ways to exploit those capabilities (targeted ads, selling the raw data, selling products derived from the data, etc).

This has become the default business model of the B2C Internet, as distinct from offering a service in exchange for payment.

If you can find enough vegan aerospace engineers and have them liquidate their savings for the good of the collective, then sure, why not :).

Maybe "orthogonal" was a bit much. But almost always there's plenty of wiggle room to choose alternative business models.

You wouldn’t think that militant orders of Christianity would have been workable, but they clearly were. I have no doubt that money and power can lead any ideology far from what we’d associate with their base principles. I doubt that vegans are the exception.