No. Every single time someone supposes that any piece of technology is approaching its limits, the answer is no. Technology will continue to improve and advance as we make new discoveries. The simple fact is we do not know the future, so pretending like we know what things will be like in 20 or 50 years is just pointless. What's with this obsession of taking today's technological knowledge and assuming that things won't drastically change? Nobody should ever pretend to know what the future holds.