Wondering how many commercial products have been jeopardised by this freeware sponsored by a corporation, and how many jobs have been put at risk?
The world is not here to ensure your business model can continue uninterrupted in perpetuity. The world moves forwards (well, mostly forwards), and it is up to you to adapt your business model accordingly.
But ultimately, whatever is best for the consumer needs to win out. If freeware knocks out commercial competitors then stagnates (like Internet Explorer), that's bad, and analogous to dumping which is not legal.
If it's just better product and continues to be, like Google Calendar, the world is simply better off.
They're not trying to acquire users for marketing, they're trying to acquire users into their ecosystem and bring more dependence on their tools, their asset store products, and make the unity ecosystem worth more.
It's a land grab. Ditto for VFX industry that they and Epic are trying to get into.
Don't understand why you're getting so harshly downvoted.