Health-tech : everyone competing with everyone?

In healthcare industry everybody seems to be getting up in everyone else’s business. 

Payers expanding into provider territories (employers direct contracting with providers, or creating employer-owned hospital)

Online pharmacies are building virtual clinics and in-home care platforms (Roman/Ro)

Diagnostic companies (like Athelas) are expanding into remote monitoring.

Clinical study recruitments expanding into offering decentralized trial solutions .  

Further business expansion keeps happening due to mergers and acquisitions.

source: dealrooms.co

Few more examples of business expansion through M&A includes,

Headspace (mindfulness and mental training) joining forces with Ginger (behavioral health coaching, therapy and psychiatry right from a smartphone).

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Thoughts (more like question): 

Is this expansionism inevitable considering how complex and interlinked the healthcare system is? 

As a product ecosystem or platform matures, and start pushing for a more seamless, unified, end-to-end experience for their endusers or customers (patient, provider, payer, employer), would that always translate to working on same problem multiple organizations already been working on? 

Is the healthcare system and the generated data doomed to stay fragmented and siloed due to this? 

Why we do not generally see health-tech monopolies?