yes and if there will be no any altcoin then everyone will do focus on only bitcoin and will invest all of their money only in bitcoin and then the price of bitcoin will increase much higher and the governments will also start to work for the adoption of bitcoin when everyone will work for that.
Bitcoin is not as good as you think and as you can see, we have a big problem with the blocksize. If this can not be solved, Bitcoin will soon be replaced by altcoin. Bitcoin is just the first crypto. There are still many potential coins out there and you have to agree that Bitcoin is not as strong as other 
So far bitcoin continue troubleshooting blocksize mb and pending transactions, we even heard of the unlimited concept, we should only think in the short term, because until whenever bitcoin developers will not stay silent, the old story that many altcoin want to take the bitcoin place, but it never happened (eth, ripple, etc). It would be easy if we continue to provide support for multiple transactions using bitcoin. Altcoin still need a leader in cryptocurrency, and that's where bitcoin is located.