I'm sure that is a valid question being looked at continually. ...

I'm sure that is a valid question being looked at continually.  Or at least I hope it is.  I guess it depends on the "value proposition".  If Ohm is and remains primarily a monitoring and analysis tool, then it is hard to see how businesses would be willing to pay an ongoing monthly fee for a long period of time.  They could probably get all the insight they needed in a max of 12 months and then terminate the agreement.  If the agreements could not be terminated for the (I believe) 3 year period, then they are unlikely to be renewed.  And the 3 year obligation may be a major deterrent. So in that scenario, a model along the lines of what you suggest may get more traction, and may provide further downstream revenue opportunities by up-selling additional analytics based insights as a premium subscription service.

Alternatively, if the evolution of Ohm rapidly added serious 'control' capability along with suitable IFTTT (or better) type algorithms, then the value in an ongoing subscription service becomes more commercial. And the pricing levels then get driven more by ROI rather than cost plus margin, and if the sweet spot mentioned in an earlier post is found, could lead to stronger margins and stickier customers.

Of course, the answer may be somewhere in between in a 'horses for courses' type of set-up.

The key to all this, however (for me) is the time frame to get this right.  Putting aside unrealistic expectations on where we expected to be (and no small part of that blame lies with company communications), the question is do we have the runway to take us from where we actually are to where this should be? I think yes...but not without substantial risk.

All IMO.  GLTA.