I know the standard procedure for updating flash without installing the bundled software is to opt-out every. single. time. there's an update, but what is one to do when they are responsible for multiple windows machines - all of which require flash and none of which require some crappy trial anti-virus software or a google toolbar or whatever else you decide to bundle with flash in the future?
I'd like to make flash a well-supported part of the standard install base, but I can't do that in good conscience when the updater cannot be silently run without installing unwanted & untested 3rd party software. What's more, Flash has enough security vulnerabilities of its own without bundled external code along with it:
Adobe Flash Player : List of security vulnerabilities
So, what am I to do? Use a 3rd-party updater? Instruct clients to wait until their favorite web pages are recoded in HTML5 before they can view them? Tell them they better never miss the opt-out button if they want support? Or should I just trust Adobe to make 100% sure that that everything they decide to bundle will be tested to work on all platforms, in all environments, and never cause an issue? (the last is obviously facetious - installing anti-virus software without permission demonstrates they have no interest in whether their software breaks existing configurations)
If I pay you money, can I get a version of the player that doesn't include 'value-added' software? Maybe what you should do is charge money for the tools people use to develop flash applications, then give the player away at a loss to give those developers a broader development base and thus make your dev tools more popular - but all that strategy ever did was make flash one of the most ubiquitous pieces of software in the world, so I can see why you ditched it.
The online installer you mention is not for distributing in the manner you are attempting. It is simply a shim installer that downloads and installs Flash Player silently in the background.
Based on the information provided, you'll need to obtain a distribution license (free) to distribute Flash Player within your organization. The Flash Player Administrator's Guide provides the information you need to license the Flash Player (chapter 1) and various options of distributing Flash Player (Chapter 3), as well as a myriad of other details on administering Flash Player within your organization. The Guide is available at Adobe Flash Player Administration Guide for Flash Player 14 | Adobe Developer Connection.