In previous generations, there was a Rov of the Kehillah, and his word was law. Now, if you don’t like the Rov’s Psak, you open a new shul, and inform the new Rov what you would like the P’sak to be (on sufferance of Hefsed Merubah for the new Rov).
How can we stop all of the new minyonim cropping up?
Bear in mind that often these Minyonim commence to enable another Oveil to also avail himself of the Omud, which is a Incredibly Huge Zechus, and then the Minyon has a way of continuing after 11 months.
147, it is a big zchus not to fight or make a break-off minyan and allow someone else to daven from the omud. don’t forget the origial minhag ashkenaz was that only one person say kaddish (still practiced in Breuers – and other places – today). Brov am hadras melech overrides someone’s “need” to daven from the omud or say kaddish.