If the stuff IS better than the competition then let them fight it out. I know the best doesn't always win in the end (Betamax vs VHS is the classic example) but we certainly shouldn't get too many people involved on inhibiting business especially at the present time.
You might not like TESCO (UK's nr 1 supermarket by far) but would the majority of people seriously want to shut it down.
( I know some do however -- TESCO has being trying to shut this site down for ages -- same Kangaroo courts that had a go against "The Bay will probably succeed here as well Tescopoly - Local campaigns against supermarkets
Whatever you might think of MS as a large monopoly it was THIS company which basically bought computing to the masses. Whilst at the time IBM had a far superior OS (OS/2 it was called or OS/2 Warp or something similar) it was almost IMPOSSIBLE for a home user to get hold of it as IBM was only interested in CORPORATES. Mr Gates showed there was a HUGE market for the home user and small companies.
Pity the 2 companies never worked out their differences - because Windows was designed as a single user OS to start with whilst OS/2 was a proper multi-tasking multi user system.
A lot of the security and performance issues could have been solved right at the start. It wasn't until Windows NT (dreadful by the way -- we used to call it Windows NEANDERTHAL or Windows NO THANKS) that windows was even considered as a Server system. Still thats for the history books.
I still feel that an EMAIL client should have been included -- OK as a selectable option why not.
The problem with some 3rd party apps - especially for serious users is that will these companies still be around and available to support the product in a few years.
We can individually without too much hassle change an email client but imagine a network of several 000's of PC's with literally zillions of emails being sent and received per day. The system has to be ROBUST and SECURE.
Microsoft whether we like it or not IS able to do this. I'm not sure about a small start up company -- 95% fail.