There may also be "second place hostility." MS entered the market very late with L2E, I myself became interested in ORM about three years ago or so, and MS was nowhere to be seen at the moment.
Many of us have already taken the time to learn another ORM (for example, NHibernate) and are used to a certain level and type of functionality available, and I do not see it in L2E yet.
This “second place” of hostility is not old news, to be honest, I don’t know why MS doesn’t spend more time on supporting solutions already in place, we all saw this with NAnt → MSBuild and NUnit → MsTest, this will save everyone a lot of time and strength, if they just make one of the best and most mature decisions and try to support it, and not brew them all the time.
Quibblesome
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