just my perspective;
E/// is still a family run company https://www.investorab.com/about-investor/organization/board-of-directors/
CEO was let go because he missed 4 Quarters in a row waiting for 5 G , in short the family NO longer had any confidence in the CEO.
The technology market keeps teaching us , no company is too big to fail, remember , WANG, DEC, Compaq, Motorola, Nortel , Nokia, Blackberry, .... for a time they were invincible.
Merchant Silicon is the only route for large Enterprises and Carriers, like it or not it is happening.
So the question is ; can the big boys make the transition in time, in short evolve or become extinct.
Looking at it from the inside , ELT are Deer's in Headlight, the company wants a make a transition to annuity like business, but every "manager" is a hardware guy and they still want to sell boxes.
Business in USA is protected as Huawei is not that present , in Europe and Asia they are dominant.
Scary thing is that they are no longer the followers, recently they have become innovators. They will be a one stop shop, as soon as they have got their story together for SDN and NFV. Until then there is a glimmer of hope.