To a degree but network effects play heavily into this. The quality of the ads being served on a platform affects ad buyers decisions. If you're a smaller compa

To a degree but network effects play heavily into this. The quality of the ads being served on a platform affects ad buyers decisions. If you're a smaller company having your ads show up along side ads from established brands gives your company a sense of legitimacy with consumers but having your ads show along side low quality ads for boner pills and obvious scams then discerning consumers will associate your company with those types of advertisers. As the big brands flee so will the smaller ones with the void being ever filled by even lower quality advertisers. Wash, rinse and repeat until all that's left are ads for boner pills and scams. Unless Twitter gets it crap together it's just a race to the bottom at this point.