Could proprietary platforms and devices splinter the Internet?

In a nutshell, he says, "Don't use Adobe's proprietary platform to engage with information on the Web.

He began to develop a cloud computing platform that could manage media across proprietary platforms.

Executed via a single-bank proprietary platform or a multibank dealing system.

Servio's proprietary platform combines process efficiency and skilled workers to deliver highly optimized, original, quality content at massive, global scale.

It uses proprietary web-based IT platform for its collaborative retailer consolidation programs.

It is a proprietary platform for Nokia's internal use only.

They result in oligarchies, limiting further service growth to narrow governance and proprietary platforms.

What's the point of using open source software on closed and overpriced proprietary platform from vendor with hostile view against open source?

C) Beside ideological tunnel vision, nobody that counts really cares about "closed, proprietary platform".