What bubble?
People argue cryptocurrency is in a bubble.
But I see it more as dough. Have you ever tried to bake something and just let the dough stay overnight? It keeps growing but it's stable.
Fat and stable and ready to become something delicious.
Projects with just marketing and no development are just a bubble. And there is half or even more such projects. 90% coins are copy paste bitcoin. 90% ICOs are projects that organizers have no ideas what they are doing. If that is not a bubble I have no ideas what it is. In a year of two they will show zero result value of those tokens will be zero. so as copy/paste bitcoin clones.