• For one, market capitalization is not a proper indicator of a good asset and can be easily manipilated to give a false sense of security,
• And my second reason, is what you've highlighted in your thread. The top coins are not fixated, the top 10 today would almost definitely not be the same in 5 years time or even in 5 months.
Do an actual research if you want to invest, don't just bank on what majority is doing or possibly inflated figures.