Do we really think that the btc network is going to be able to handle the future transactions in bulk and speed even with lightning network ?
Yes ,Bitcoin will handle in bulk transactions and in a faster speed because lightning network and SegWit is design to enhance the traditional blockchain technology, simply this network element is capable in connecting any and all users to this fast and fee less system , it is needed because even though, you are in top, there must be a innovation on every aspects to sustain the competition on different crypto currencies