Pointing this as a limitation is misleading. The Cardano blockchain is designed to best perform at 100% saturation. Average network usage is less than 30%. As of today we only reached this 100% usage 2 times. Cardano network is very resilient and protocol parameters are fast to adapt if needed (block time, block size, transaction size,...). By the time traffic persistently increases to higher levels, the network will adjust parameters to face the demand.