Bitcoin.com had been registered by mark karpeles long before the starting of btc, and this website was started by theymos and this was the only good domain available
bitcoin.com existed before the Bitcoin software/currency was created. It was owned by an unrelated company. bitcoin.org (and bitcoins.org and bitcoin.net) was registered by Satoshi for Bitcoin.
I didn't even know about Bitcoin when this forum was first created!
I believe U chose the name and it is inspired by WebHostingTalk, the largest web hosting discussion forum on the internet.
Ok got it, and my guess would be Atlas 
Nope.
Looks like Bitcoin.com is no more owned by any unrelated company. It is owned by Roger Ver of BlockChain.info. Rather bitcointalk.com is owned by people who are bad naming this forum.