With DApps integrating into IoT and slowly becoming an irreplaceable part of our lifestyles, it wouldn't be surprising at all if Bitcoin was replaced by a currency that offers more value.

And by 'value' I don't mean simple monetary value, but rather the usage and efficiency of usage that a given currency represents. If you consider how the ethereum blockchain is being used to develop all kinds of decentralised applications, due to it's superior block processing speed, and ETH relative ease of acquisition.

What sorts of apps? For example,the fellas over at https://nucleus.vision are developing a coin that is to be integrated into retail sales, as both payment for consumer data, and as a customer loyalty bonus. If they get picked up by major retailers and the token alone could blindside bitcoin and soar, price-wise, while adding significant value as a medium of exchange.