Napster was eventually sacrificed by lawsuits, but it changed the music industry.
I’m not sure what happen to Netscape, but it was the first browser to again change the world as we know it.
The bitcoin market of where you can purchase products is expanding. The dollar is not tied into gold and the banks just print money out of thin air. It’s based on market forces just like bitcoin
What happened to Netscape is that they thought they had unique advantages when in fact they did not. As such they were eventually undermined by newer embodiments of the technology and real competition from more resourceful entrants. And no, they weren't the first browser, just the first commercialized version of the Mosaic technology that was the first browser. The lesson for Bitcoin is apt.
Any currency is backed by something. Traditionally that has been either a physical commodity (e.g., gold) or a government that has the force of law behind it. Cryptocurrencies claim to be above such needs, being based on mathematics, but that's both their strength and their weakness. The mathematics have to be hard enough to prevent fraud but simple enough to be functional. That's a difficult line to draw and one of the biggest problems with Bitcoin. The math is sufficiently hard that the ledger system is overly cumbersome and relies on too much external infrastructure to be functional. At the same time, it's vulnerable to advances in quantum computing. It's entirely likely that in less than twenty years (possibly much sooner) its security will be fatally compromised by such advances. Real currencies are far more durable.