I can see Bitcoin easily being overtaken during this period, this is one of the reasons I am also invested in the altcoins. Bitcoin truly seems stagnant in comparison to me, the alternatives are able to innovate much faster and already have much greater transactional capacity then Bitcoin.
Stagnant based on what, having the highest market capitulation since late 2013/early 2014, having the higher number of transactions per day than it ever did, having the by far(!) the best development team in the ecosystem? Please tell me what's the "stagnation here". Hint: Not being able to process a number of TXs that you want != stagnation.
First of all, the transaction rate of Bitcoin has historicly been increasing, untill it hit the blocksize limit, I do not consider that to be a positive thing, literal stagnation because of a restriction in the code.
Secondly, Bitcoin is stagnating technologically, when compared to the alternative cryptocurrencies.
Thirdly as I proved earlier in this thread Bitcoin has been losing market share steadily over the last two years, while the altcoin market share is growing consistently.
Fortunately there are many alternatives to Bitcoin out there, I personally like Dash, and its solutions to governance, Ethereum and Monero are also both good cryptocurrencies, all of these cryptocurrencies do not have problems with scaling, Dash has a second tier, incentivizing collateralized full nodes that also vote and can handle greater load. Ethereum already has far greater capacity then Bitcoin and it will have even more in following releases. Monero simply has an adaptive blocksize, with some very interesting incentive structures to keep the blocks from becoming to large.
Dash has a very shady history behind it, I know since I was an early adopted. ETH is neither a immutable, censorship resistant nor decentralized change. Additionally, they've had very troubling security problems with the DAO and now with geth. Monero will likely end up being illegal if it picks up. Anything else?
I can give you many examples, and I support all three of the projects I just mentioned, I could go into defending each of them on their merits, but I am busy enough attempting to defend the original principles of Bitcoin here on this forum.