the safest bet in crypto is that there won’t be thousands of chains or one chain
but that 10-20% of chains will be 80-90% of all activity
so if there are 10 L1s, two of them will be the most dominant
if there are 30 L2s, 3-6 of them will be the most dominant, etc
the reason is simply that chains are networks and network effects lied to power law / pareto distributions
the other reason is that this is already the case today