@User14March
On cost of good PR. It really depends on what the brief is and who the agency are. Meghan started with Sunshine Sachs, who I've worked alongside tangentially (I'm not claiming to be on or anywhere near their level, I am very much small fry, and my rates are too in the grand scheme!). SS can levy retainer fees of anything from $25k per month upwards for a sizeable brief. And they are excellent, impeccable power and credentials, excellent juniors. But it really is a case of how long is a piece of string - agents will charge a retainer or a discrete project fee and it depends so much on the situation, the size of the team required, is it cross border, does it cover social media AND legacy media, is it multi-lingual etc. The costs will rack up quickly for a 360 degree brief.
Rumour in the industry is that SS let Meghan go for non-payment of invoices. That I can believe.
An individual agent or a start-up or small agency would be much cheaper BUT they won't have the same skillset, reach, influence or power as one of the big agencies.
As to how I see it panning out, I dunno I'm not a soothsayer :-)
Professionally I think it'll continue to be a slow slide into irrelevance UNLESS something external changes eg a major acting job, an awesome product line that flies off the shelves, a change in their relationship etc.
Personally, folie a deux type relationships whereby each partner has some form of personality disorder and/or trauma, never end well.