
Ethereum one transaction is 25 per seconds is not enough to stand in rivalry market of the blockchain based smart contract platform. Recently Ethereum network was entirely congested because of high numbers of transactions were being lined to adjust in blockchain and the interesting part is , Most of the Developer in the community yelled to increase the Gas limit or block size .
As we know Ethereum is moving like a snail in the competitive market if we compare it with its son 'Tron ' which was born in 2018 as ERC-20 token on Ethereum Blockchain and just quickly declared independent peer to peer network own blockchain .
Now if we compare just Ethereum with Tron then we found following points :
Blockchain:
Tron
founded in july , 2017,Forked from Ethereum J, coded on java ,aimed to be decentralised internet infrastructure ,1500 transaction per second with speed of 15 seconds per transaction,blocksize no limit,supported Dapps and smart contract ,3 layer architecture , scalable with proof of stake consensus .
Ethereum
Founded in july 2015, forked none , coded on solidity ,targeted Dapps platform , 25 transaction per second with the speed of 6 minutes per transaction ,Gas limit and depends on contract complexity ,Supported Dapps and smart contract ,3 layer architecture , scalable with proof of work consensus.
if we come back on the point about Gas limit and its price then we find :

Why Ethereum is legging behind in the competitive blockchain market, it already being differentiated on top paragraph .but how justifiable to run a smart contract or Dapps on Ethereum will be point of discussion.

As per current Approach by Ethereum Developer and miners , Increasing Gas limit for betterment of increasing block size which is totally capped by gas limit contained every block.in ethereum network, gas price is most important where miners signal on network to increase the gas price if the transactions are more in numbers per seconds and started piled up. instead of transaction gas limit , there are also set gas limit for DAPPS and Smart contract which need to set in between 100,000 to 200,000 gas.
To resolve the current problem on Ethereum network where most of the transactions are being delayed because of congestion and low gas price( 32 Gwei worth 0.16 USD) with limited gas per block is 21000 .
And they raising their voice to either increase the gas limit or block size to cop up with current problem of the network congestion.
In Summery , Ethereum has to do something quickly in terms of scalability and mass adoption and in this competitive market evry 1 minute is very important to be a better Dapps networking blockchain . This all Gas limit and related price for each transactions does not suitable any more on such a revolutionary blockchain of real use in Dapps and smart contract .
Hope one day Ethereum will be seen zero transaction fee for all aspect and no more 'Gas' word in the dictionary of ethereum .
Resources:
https://cointelegraph.com/news/ethereum-community-debates-raising-the-block-size-limit-once-again
https://decenter.org/en/what-are-gas-gas-limit-and-gas-price-in-the-ethereum-network
https://blog.education-ecosystem.com/differences-tron-vet-neo-ethereum/
https://medium.com/@arunrajeevan/tokens-gas-and-gas-limit-in-ethereum-f07790f56d8f