He's the common denominator, I'd say that says something about him, especially in this buudy-buddy generation (or maybe it ain't so buddy after all). Everybody isn't beefing with him but usually they keep collaborating or are at least still cool, like Drake is with Ross, who didn't need him in 09/10. Or Ross with Jay. Ross with Nas. Jay and Jeezy. There's a mutual respect for each other so those dudes stay cool/in collaboration.
Kendrick would probably send real shots by now if Jimmy didn't give Drake 20 million. Meek obviously. Wale don't fukk with him. Future got basically a love - hate relationship with this nikka since he got on. French and Rocky don't seem to dislike Drake but instead of maintaining that connection with him for branding sake, they're rather indifferent to him.
All those features on their major debuts were strictly business moves, like I and a couple others here have said the Drake stimulus package is too stimulate himself.
The only major nikka to not cave into Drake's tactics was Wiz.
Just pointing out that the bolded is pretty much conjecture on your part. You don't really know the personal relationships of these rappers better than the rest of us, you're just assuming.