Activation of Segwit depends upon consensus of miners. In case of LTC, all the number of miners were low and all of them were in favour of change (including founder) so it was pretty easy to apply.
But in case of BTC, number of miners are too high and everyone have different opinions. So if Segwit applied half heartly at 50-60% consensus, it may leads to opposite circumstances in BTC ecosystem like we see in "Democratic Countries regarding Government ".