[jlgreco]

There are nearly 50 companies or organizations signing the letter. That would make for a pretty damn unwieldy headline.

[lostoptimist]

The poster updated the title. I would agree with you but article's title named 5 companies and the poster's title named 3. Either copy the title in it's entirety or don't name any companies.

[Aldo_MX]

You can always use a headline like "Google, Apple, Facebook and 50 others like this"