I can imagine that bitcoin is very strong it has a lot of funds in it and there are a lot of people investing in it too.
The foundation has been build if you asking me and it will only continue to grow stronger throughout the years.
I think the strength of bitcoin does not depend on the total funds of bitcoin, but from the users themselves. if bitcoin has little bitcoin users would be very weak and may be easily killed. but when bitcoin have hundreds of millions of users bitcoin would be very strong
I think that also it depends on the users of bitcoin, continuous increasing the users demand it will also increasing its value and in the crypto world no doubt that bitcoin if the leading and stronger coin than all other coins.
You are right with it and we can see the more users are going to start using bitcoins then that is going to make the price of bitcoin higher. And that is going to make the demand of bitcoins really high. And regarding its strength for its security we can see of how bitcoin is really strong and tough enough to compete with other currencies.