That may well be true right now but of course we are in a time of transition right now and Adobe seems to be burning rather too many bridges.
If adobe wanted their runtime to survive (I'm not sure they do) they would be showing commitment to supporting their runtime in as many places as possible.
Right now the only place it really runs well is on Windows which means they are quite firmly shackled to Microsoft and it's not even clear that MS see flash as part of their vision for their products.
I think it's pretty clear MS does not, since Flash doesn't work on IE 10 on Windows 8 using the default UI (Metro).
My guess is that Adobe has given up on the runtime and is cutting costs while investing in the authoring tools (which is where they make their money anyway) for HTML5.
If adobe wanted their runtime to survive (I'm not sure they do) they would be showing commitment to supporting their runtime in as many places as possible.
Right now the only place it really runs well is on Windows which means they are quite firmly shackled to Microsoft and it's not even clear that MS see flash as part of their vision for their products.